Technical Vocational Education - Quarter 3 PDF

7 Technical –Vocational Education Quarter 3 Explaining the Basic Functions of a Resistor SPTVE_EXPL7-PMST-IIIf-20 Technology and Livelihood Education – Grade 8 Alternative Delivery Mode Quarter 1 – Explaining the Basic Function of a Resistor R...

7 Technical –Vocational Education Quarter 3 Explaining the Basic Functions of a Resistor SPTVE_EXPL7-PMST-IIIf-20 Technology and Livelihood Education – Grade 8 Alternative Delivery Mode Quarter 1 – Explaining the Basic Function of a Resistor Republic Act 8293, section 176 states that: No copyright shall subsist in any work of the Government of the Philippines. However, prior approval of the government agency or office wherein the work is created shall be necessary for exploitation of such work for profit. Such agency or office may, among other things, impose as a condition the payment of royalties. Borrowed materials (i.e., songs, stories, poems, pictures, photos, brand names, trademarks, etc.) included in this book are owned by their respective copyright holders. Every effort has been exerted to locate and seek permission to use these materials from their respective copyright owners. The publisher and authors do not represent nor claim ownership over them. Published by the Department of Education - Region III Secretary : Leonor M Briones Undersecretary : Analyn M. Sevilla Assistant Secretary : Alberto T. Escobarte `Development Team of the Module Author : Artemio E. Jose Language Reviewer : Shiela Fherl S. Budiongan Content Editor : Edgardo F. Geronimo Illustrator : Artemio E. Jose Layout Artist : Luzviminda T. Dela Cruz Management Team: Gregorio C. Quinto, Jr., EdD Chief, Curriculum Implementation Division Rainelda M. Blanco, PhD Education Program Supervisor - LRMDS Agnes R. Bernardo, PhD EPS-Division ADM Coordinator Glenda S. Constantino Project Development Officer II Joel I. Vasallo, PhD EPS – Technology and Livelihood Education Joannarie C. Garcia Librarian II Department of Education, Schools Division of Bulacan Curriculum Implementation Division Learning Resource Management and Development System (LRMDS) Capitol Compound, Guinhawa St., City of Malolos, Bulacan Email address: [email protected]  7 Technical Vocational Education Quarter ___ Explaining the Basic Functions of a Resistor SPTVE_EXPL7-PMST-IIIf-20  Introductory Message For the Facilitator: Welcome to the Technical Vocational Education 7 Project CAP-LRE Alternative Delivery Mode (ADM) Module on Explaining the Basic Functions of a Resistor. This module was collaboratively designed, developed and reviewed by educators both from public and private institutions to assist you, the teacher or facilitator in helping the learners meet the standards set by the K to 12 Curriculum while overcoming their personal, social, and economic constraints in schooling. This learning resource hopes to engage the learners into guided and independent learning activities at their own pace and time. Furthermore, this also aims to help learners acquire the needed 21st century skills while taking into consideration their needs and circumstances. In addition to the material in the main text, you will also see this box in the body of the module. Notes to the Teacher This contains helpful tips or strategies that will help you in guiding the learners. As a facilitator, you are expected to orient the learners on how to use this module. You also need to keep track of the learners’ progress while allowing them to manage their own learning. Furthermore, you are expected to encourage and assist the learners as they do the tasks included in the module. For the Learner: Welcome to the Technical Vocational Education 7 Project CAP-LRE Alternative Delivery Mode (ADM) Module on Explaining the Basic Functions of a Resistor. This module was designed to provide you with fun and meaningful opportunities for guided and independent learning at your own pace and time. You will be enabled to process the contents of the learning resource while being an active learner. This module has the following parts and corresponding icons. This will give you an idea of the skills or competencies you are expected to learn in the module. This part includes an activity that aims to check what you already know about the lesson to take. If you get all the answers correctly (100%), you may decide to skip this module. 1  This is a brief drill or review to help you link the current lesson with the previous one. In this portion, the new lesson will be introduced to you in various ways; a story, a song, a poem, a problem opener, an activity or a situation. This section provides a brief discussion of the lesson. This aims to help you discover and understand new concepts and skills. This comprises activities for independent practice to solidify your understanding and skills of the topic. You may check the answers to the exercises using the Answer Key at the end of the module. This includes questions or blank sentence/paragraph to be filled in to process what you learned from the lesson. This section provides an activity which will help you transfer your new knowledge or skill into real life situations or concerns. This is a task which aims to evaluate your level of mastery in achieving the learning competency. In this portion, another activity will be given to you to enrich your knowledge or skill of the lesson learned. This contains answers to all activities in the module. At the end of this module, you will also find: References- This is a list of all sources used in developing this module. The following are some reminders in using this module: 1. Use the module with care. Do not put unnecessary mark/s on any part of the module. Use a separate sheet of paper in answering the exercises. 2. Don’t forget to answer What I Know before moving on to the other activities included in the module. 3. Read the instruction carefully before doing each task. 4. Observe honesty and integrity in doing the tasks and checking your answers. 5. Finish the task at hand before proceeding to the next. 6. Return this module to your teacher/facilitator once you are through with it. If you encounter any difficulty in answering the tasks in this module, do not hesitate to consult your teacher or facilitator. Always bear in mind that you are not alone. We hope that through this material, you will experience meaningful learning and gain deep understanding of the relevant competencies. You can do it! 2  This module provides varied activities that will help you learn about the basic functions of a resistor. It will also help you comprehend what are the basic functions of a resistor. At the end of this module, you are expected to: identify the basic functions of a resistor; calculate the value of a resistor through the colour coded chart; and recite the colour coded chart of a resistor. What I Know Directions: Answer the following questions. Write your answer on a separate piece of paper. 1. Which among the choices best described the function of a resistor? a. convert alternating current c. permit the direct current to pass b. limit the flow of current d. to block totally the flow of current 2. What component that controls the flow of current to other components? a. capacitor c. integrated circuit b. diode d. resistor 3. Which component among the choices that has no polarity? a. capacitor c. rectifier diode b. light emitting diode d. resistor 4. What specific digit band number represents for the colour blue? a. 3 c. 5 b. 4 d. 6 5. Which among the choices is the correct tolerance of the colour green? a. ±0.2% c. ±0.5% b. ±0.3% d. ±0.6% 6. What specific number indicates as a multiplier of colour orange? a. 100 c. 2,000 b. 1,000 d. 3,000 7. What is the percentage assigned to the tolerance of colour brown? a. ±1% c. ±3% b. ±2% d. ±4% 8. Which among the choices is the digit band number for the colour gray? a. 3 c. 5 b. 4 d. 8 9. What colour has the digit band value of number 7? a. green c. white b. violet d. yellow 3 10. What is the assigned tolerance for the colour blue? a. ±0.25% c. ±0.27% b. ±0.26% d. ±0.28% 11. What is the name of the printed colour in the body of the resistor? a. colour band c. multiplier b. digit value d. tolerance 12. What do you call the maximum and minimum value of its actual value of a resistor? a. colour band c. multiplier b. digit value d. tolerance 13. Which among the choices is Not part of the group? a. capacitance c. band b. digit value d. tolerance 14. What is the tolerance of red, based on the colour coded table chart of the resistor? a. ±01% c. ±2% b. ±02% d. ±3% 15. What is the multiplier of colour black, based on the colour coded table chart? a. 1 c. 3 b. 2 d. 4 16. What is the resistance, if we have two different values of resistors like 240Ω and 180Ω? a. 359Ω c. 420Ω b. 398Ω d. 422Ω 17. What is the maximum resistance of a resistor, if we have 1000Ω ±5%? a. +1,050Ω c. +1,052Ω b. -1,051Ω d. -1,053Ω 18. What is the whole value of a resistor, if we have the band colours like red, red, black, and gold? a. 21Ω ±5% c. 24Ω±0.5% b. 22Ω±5% d. 25Ω±0.5% 19. Which among the choices best describe the hindrance to the flow of electrons? a. current c. resistance b. power d. voltage 20. Who generously studied the relationship between voltage, current and resistance? a. Georg Simon Ohm c. Nikola Tesla b. Michael Faraday d. Thomas Edison 4  In doing electronic projects like assembling it may include the different types of components. And we make it sure that we are safe while doing the project. We have to observe safety first before we do the project. The different types of electronic components have their own function in the circuit. Like for example the charger of your phone, laptop charger, and the inside part of the charger there is a circuit inside where the components are being soldered. In the circuit, it can be seen and attached the different types of components to make the cell phone or laptop charger functional. Cell phone charger Lap top charger In the field of electronics we have learned that Electronics is the branch of physics and technology concerned with the design of circuits using transistors and microchips, and with the behavior and movement of electrons in a semiconductor, conductor, and vacuum. Aside from those components that have been mentioned, it talks about the circuit designing using some components. And with this connection if we make an electronic projects assembling components in the printed circuit board, we have to make it sure that all components are properly inserted or properly soldered on the printed circuit board. Notes to the Teacher The activities in this module are arranged from simple to complex to help the learner gradually master the desired learning competency. Give him/her the needed support and guidance so that he/she will be able to perform the tasks to prepare him/her later on in explaining the basic function of a resistor. 5  Resistor Passive components can influence the flow of electricity running through them. For example, they can resist its flow, store energy for later use, or produce inductance. However, they cannot control or amplify electricity themselves. Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm (1784- 1854), a German physicist who studied the relationship between voltage, current and resistance. He is credited for formulating Ohm's Law. The function of the resistor is to resists the flow of electrical current in a circuit. It also used to lower voltage. Antennas are also passive and are found in radios, GPS devices, satellites, wireless modems and routers, public transport and more. General purpose of fixed resistors: Carbon film Metal film Wire wound Surface mount Tolerance 2-10 % (5%) 0.1-5 % (1%) 0.1-5 % (1%) 0.1-5 % (1%) Power rating 0.125-2W 0.1-5W 1-200W 0.0125-0.25W (1/4W) (1/4W) (10W) (0.1W) Temp. 250-450ppm/K 10-250 ppm/K 20-400 ppm/K 25-200 ppm/K coefficient (450) (50) (50) (100) Resistor is used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines. It is a passive two-terminal electrical component that implements electrical resistance as a circuit element. Physical appearance Schematic (new symbol) IEC standard (Europe) Schematic (old symbol) American standard (USA, Japan) Band Arrangement First colour – First digit number Second colour – Second digit number Third colour - Multiplier Fourth colour - Tolerance 6 Film Resistor are made of two connecting leads, insulating materials, spiral groove and resistive film. Carbon Composition Resistor composed of two connecting leads, insulating material, carbon mixture. Carbon composition resistor (CCR) consist of a solid cylindrical resistive element with embedded wi re leads or metal end caps to which the lead wires are attached. Metal oxide film resistors use thin metal oxide films to coat an insulating ceramic rod. Carbon Film Resistor is prepared by depositing carbon film on the ceramic substrate which is an insulator. The electric current is blocked to a certain extent by the carbon film. Metal film resistors are axial resistors with a thin metal film as resistive element. The thin film is deposited on usually a ceramic body. Carbon film resistors are constructed out of a ceramic carrier with a thin pure carbon film around it; that functions as resistive material. Metal film resistor Carbon film resistor Metal oxide film resistor Wattage Power Rating of Resistor Resistor Power Rating is sometimes called the Resistors Wattage Rating. It is the amount of heat that a resistive element can dissipate for an indefinite period of time without degrading its performance. The wattage ratings of 1/8 (0.125) W, 1/4 (0.250) W, 1/2 (0.5) W, 1W, and 2 Watts. Resistors are rated by the value of their resistance and the electrical power given in watts, (W) that they can safely dissipate based mainly upon their size. Every resistor has a maximum power rating which is determined by its physical size as generally, the greater its surface area the more power it can dissipate safely into the ambient air or into a heatsink. Conductors are the materials that offer very little resistance where electrons can move easily. Examples: silver, copper, gold and aluminium. Insulators are the materials that present high resistance and restrict the flow of electrons. Examples: Rubber, paper, glass, wood and plastic. An ampere (AM-pir), or amp, is the international unit used for measuring current. Resistance measurements are normally taken to indicate the condition of a component or a circuit. The higher the resistance, the lower the current flow. If abnormally high, one possible cause (among many) could be damaged conductors due to burning or corrosion. All conductors give off some degree of heat, so overheating is an issue often associated with resistance. Amps are named for French mathematician/physicist Andrè- Marie Ampére. Flows in a sine wave pattern (shown below); reverses direction at regular intervals. The lower the resistance, the higher the current flow. Possible causes: insulators damaged by moisture or overheating. A current of 1 ampere means that 1 coulomb of 7 electrons—that's 6.24 billion, billion (6.24 x 1018). Attenuator is a device consisting of an arrangement of resistors which reduces the strength of a radio or audio signal. For high power applications wire wound resistors are often used and has a power ratings from 10- 250W. Different Types of Resistors Zigzag(USA, Japan) Used (Europe) Fixed resistor Fixed resistance Variable resistor (Potentiometer) Three terminal resistor Variable resistor (Rheostat) Used to control current Variable resistor (Pre-set) To alter resistance Light Dependent Resistor Also called Photo resistor Resistor Colour Coded Table Chart Colour Band Digit Value Multiplier Tolerance Black 0 0 1 Brown 1 1 10 ±1% Red 2 2 100 ±2% Orange 3 3 1,000 Yellow 4 4 10,000 Green 5 5 100,000 ±0.5% Blue 6 6 1,000,000 ±0.25% Violet 7 7 10,000,000 ±0.1% Gray 8 8 100,000,000 ±0.05% White 9 9 1,000,000,000 Gold 0.1 ±5% Silver 0.01 ±10% No colour/band ±20% Here are some example on how to use the resistor table chart. Brown Colour Value Black Brown 1 Brown Black 0 Brown 10 Gold ±5% Gold 10 X 10__ 100 Ω ±5% Example 1 100 Brown - 1 First colour Black - 0 Second colour minimum resistance value: 100 - 5 = 95Ω 8 maximum resistance value: 100 + 5 = 105Ω Brown - 10 Multiplier Gold - ±5% Tolerance 100 Ω - Resistor value 100 X 0.05 = 5 Example 2 Brown Colour Value Red Brown 1 Red 2 Red Red 100 Gold ±5% Gold Computation: 12 Brown - 1 First colour X100_ 1,200Ω ±5% Red - 2 Second colour 1,200 Red - 100 Multiplier Gold - ±5% Tolerance minimum resistance value: 1,200 – 60 = 1,140Ω 1,200 Ω - Resistor value 1,200 X 0.05 = 60 maximum resistance value: 1,200 + 60 = 1,260Ω Example 3 Blue Colour Value Red Blue 6 Green Red 2 Green 100,000 Gold Gold ±5% 62 Blue - 6 First colour X100,000 6,200,000Ω ±5% Red - 2 Second colour 6,200,000 Green - 100,000 Multiplier minimum resistance value: Gold - ±5% Tolerance 6,200,000 – 310,000 =5,890,000Ω 6,200,000Ω - Resistor value maximum resistance value: 6,200,000 X 0.05 = 310, 000 6,200,000+310,000 = 6,510,000Ω 9  Almost of the electronic gadgets, appliances, used electronic components. Electronic components are so important in any appliance or gadget that make them functional and safety to the user. It very helpful because it limit, regulate, control the flow of current in the circuit and also to the other components of the circuit. Independent Activity 1 Directions: Identify whether the statement is True or False. Put check (√) inside the box before each number if the statement expresses the correct meaning. Otherwise, put (X) if the statement is incorrect. 1. A resistor has its own polarity compare to other components (+,-). 2. A conductor permits the current to flow. 3. Insulator is a good conductor of an electricity. 4. Water is a good conductor of an electricity. 5. The third colour band of the resistor is the multiplier. 6. The multiplier of red is 20 in the colour coded table chart. 7. The tolerance of gold is ±15%. 8. The multiplier of black one. 9. The multiplier of gold is point one. 10. A resistor is capable of changing alternating current to direct current. Independent Assessment 1 Directions: Determine whether each statement is correct. BOX the LIKE icon if the statement is true. Otherwise, BOX the DISLIKE icon, if the statement is false. 1. Resistor will resist or limit the current flowing it. 2. Resistance is a measure of the opposition to current flow in an electric Current 3. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). 4. Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who studied the relationship between voltage, current and resistance. 5. If we add 250Ω + 365 Ω + 300Ω, we get the total of 915Ω. 6. The movement/flow of current in a conductor is called electricity. 7. Voltage is also known as electromotive force (emf). 8. The tolerance of gold is five percent (÷5%). 10  9. Alternating current has no permanent polarity. 10. One of the example of direct current is battery. Independent Activity 2 Direction: Choose the correct band colour from the box to complete the table below. Write your answer inside the box. Green Red Green Orange White Orange Brown Black Brown Gray Violet Yellow Blue Red Orange Write the missing colour to make it complete. 1. Brown Brown Gold 180Ω ±5% 2. Orange Brown Gold 130Ω ±5% 3. Red Brown Gold 200Ω ±5% 4. Red Yellow Gold 240Ω ±5% 5. Black Brown Gold 300Ω ±5% 6. Orange Brown Gold 390Ω ±% 7. Yellow Orange Gold 430Ω ±5% 8. Brown Brown Gold 510Ω ±5% 9. Blue Brown Gold 620Ω ±5% 10. Violet Green Gold 750Ω ±5% Independent Assessment 2 Directions: Choose the correct ohm/s value from the box to complete the whole value of the resistor. 100Ω ±5% 330Ω ±5% 270Ω ±5% 390Ω ±5% 680Ω ±5% 540Ω ±5% 150Ω ±5% 1,000Ω ±5% 220Ω ±5% 560Ω ±5% 820Ω ±5% 230Ω ±5% _____________ 1. Brown, Black, Brown, Gold _____________ 2. Brown, Black, Red, Gold _____________ 3. Orange, Orange, Brown _____________ 4. Red, Violet, Brown, gold _____________ 5. Red, Red, Brown, Gold 11  _____________ 6. Brown, Green, Brown, Gold _____________ 7. Orange, White, Brown, Gold _____________ 8. Green, Blue, Brown, Gold _____________ 9. Blue, Gray, Brown, Gold _____________ 10.Gray, Red, Brown, Gold Independent Assessment 3 Directions: Read each statement below and match column A to column B. Column A Column B _______ 1. It is the multiplier of red in the colour coded chart. a. Resistor _______ 2. It permits the current to flow. b. 100Ω ±5% _______ 3. It does not permit the electricity to flow. c. 10,000 _______ 4. The multiplier of orange. d. ±0.05% _______ 5. The tolerance of gray. e. 180Ω ±5% _______ 6. It is the intensity flow of electron in a conductor. f. 9 _______ 7. The band digit number of white. g. _______ 8. The total value of brown, black, brown and gold. h. 170Ω ±5% _______ 9. The total value of red, red, brown and gold. i. 1,000 _______ 10. The multiplier of yellow. j. Conductor _______ 11. The digit number is nine. k. _______ 12. The schematic old symbol of resistor. l. White _______ 13. The physical appearance of resistor. m. Insulator _______ 14. It used to lower the voltage. n. 220Ω ±5% _______ 15. The total value of brown, gray, brown and gold. o. current p. 100 12 Independent Assessment 3 Directions: Identify the missing word to complete each sentence. Write your answer on the blank. 1. Resistance is a measure of the ____________to current flow in an electrical circuit. 2. Resistance is measured in __________, symbolized by the Greek letter omega (Ω). 3. Ohms are named after _______________________________________________. 4. The main function of the resistor is to _____________the flow of electrical current in a circuit. 5. _____________are also passive and are found in radios, GPS devices, satellites, wireless modems and routers, public transport. 6. _____________German physicist who studied the relationship between voltage, current and resistance. 7. All _____________give off some degree of heat, so overheating is an issue often associated with resistance. 8. The primary purpose is to ______________the flow of electrical current. 9. The word “voltage” is also known as _____________. 10. ____________is the rate at which electrons flow past a point in a complete electrical. circuit. 11. _____________is the international unit used for measuring current. 12. _____________are named for French mathematician/physicist Andrè-Marie Ampére 13. Direct current flows only in _____________direction. 14. Flows in a sine wave pattern; ____________direction at regular intervals. 15. A current of 1 ampere means that 1 ____________ of electrons—that's 6.24 billion- billion (6.24 x 1018). 13 Based on your understanding answer the following question below. 1. What do you mean by insulator? _________________________________________________________________________ _________________________________________________________________________ 2. What is the main purpose of an insulator? _________________________________________________________________________ _________________________________________________________________________ 3. What are the different types of insulators? _________________________________________________________________________ _________________________________________________________________________ 4. What is the difference between conductor and insulator? _________________________________________________________________________ _________________________________________________________________________ 5. What is the function of a resistor in a circuit? ________________________________________________________________________ ________________________________________________________________________ Direction: Give your own explanation below on how you will use the basic hand tools. 1. If we have the colours like green, brown, red and gold. What is the value of the resistor? _________________________________________________________________________ _________________________________________________________________________ 2. What is the international unit used for measuring current? _________________________________________________________________________ _________________________________________________________________________ 3. What material that the carbon metal resistor is made of? _________________________________________________________________________ _________________________________________________________________________ 4. What material did the film resistor is made of? _________________________________________________________________________ _________________________________________________________________________ 5. What is the difference between carbon metal resistor and film resistor? _________________________________________________________________________ _________________________________________________________________________ 14 Directions: Read each question and write letter on the black before the number. ______1. What kind of resistor that is made of two connecting leads, insulating materials, spiral groove and resistive film? a. carbon composition resistor c. fusible resistor b. film resistor d. wire wound resistor ______2. What kind of resistor is composed of two connecting leads, insulating material and carbon mixture? a. carbon composition resistor c. fusible resistor b. film resistor d. wire wound resistor ______3. What types of resistor that its electrical resistance is not adjustable? a. fixed resistor c. potentiometer b. light dependent resistor d. variable resistor ______4. What types of resistor suitable for high power applications through a circuit? a. carbon film resistor c. metal film resistor b. fixed resistor d. wire wound resistor ______5. What types of a resistor used in power supplies and welding controls? a. carbon composition c. surface mount b. metal film d. wire wound ______ 6. What is the total resistance if we have 330Ω and 620Ω? a. 950 Ω c. 956 Ω b. 955 Ω d. 957 Ω ______7. What available power ratings used in wire wound resistor in high applications? a. 3-8.121W c. 5-9.331W b. 4-9.322W d. 10-250W ______8. What degree of applications did the wire wound resistor being used? a. high power c. medium power b. low power d. none of the above ______9. What types of resistor that has a resistive element made from a mixture of finely powdered carbon? a. carbon film c. surface mount b. metal film d. wire wound ______10. Which among the choices is the multiplier of orange? a. 1,000 c. 3,000 b. 2,000 d. 4,000 ______11. What is the total value of the resistor, if we have gray, red, brown and gold? a. 818 Ω ±5% c. 820 Ω ±5% b. 819 Ω ±5% d. 821 Ω ±5% ______12. Which value is correct, if we have colours like yellow, violet, brown and gold? a. 470 Ω ±5% c. 472 Ω ±5% b. 471 Ω ±5% d. 473 Ω ±5% ______13. Which among the choices is correct in placing symbol and percentage? a. 120 Ω ±5% c. 520 Ω 5%± b. ±220 Ω 5% d. 620 ±5%Ω ______14. What is the minimum value of a resistor, if we have 330 Ω ±5%? 15  a. 346.1 Ω c. 346.3 Ω b. 346.2 Ω d. 346.5 Ω ______15. Which among the choices is the minimum value of a resistor, if we have 680 Ω ±5%? a. 646 Ω c. 648 Ω b. 647 Ω d. 649 Ω ______16. Which among the choices is the actual physical appearance of the resistor? a. c. b. d. _____ _17. What is the standard unit of electrical power? a. ampere c. resistance b. power d. watt ______18. What is the schematic symbol of light dependent resistor? a. c. b. d. ______19. What is the minimum value of the following colours like orange, black, red and and gold? a. 2,850Ω c. 2,66Ω b. 2,742Ω d. 2,69Ω ______20. What is the minimum value of the resistor, if we have 360Ω ±5%? a. 334Ω c. 339Ω b. 336Ω d. 342Ω Direction: Answer the following puzzle below. Hints are given on the right side. A. Across: 1. Intensity flow of electricity 3. It conducts electricity 4. It is the flow of current Down: 2. Does not conduct electricity 5. It resists the flow of current 16 B. Across: 2. has a multiplier one hundred thousand 3. has a digit number of seven Down: 1. has a tolerance of ten percent 4. has a digit number of three 5. has a multiplier of one million Comments/ Suggestions _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ 17  Independent Assessment 3 (page 11-12) What I Have Learned (page 12-13) 1. opposition 11. Amp 1. Insulator does not permit electricity to flow. 2. Ohms 12. Amps 2. To protect us from electrocution. 3. George Simon Ohm 13. one 3. Rubber, paper, glass, wood, and plastic 18 4. resists 14. reverses 4. Conductors conduct electricity 5. Antennas 15. coulomb 5. To limit, regulate, resists the flow of current 6. Georg Simon Ohm 7. conductors 8. limit 9. electromotive force or emf 10. current Independent Activity 1 Independent Assessment 1 Independent Assessment 1 (page 10) (page 10) (page 11) 1. Gray 1.100 Ω ±5% 1. p 11. L 2. Brown 2. 1,000 Ω ±5% 2. j 12. g 3. Black 3. 330 Ω ±5% 3. m 13. k 4. Brown 4. 270 Ω ±5% 4. I 14. a 5. Orange 5. 220 Ω ±5% 5. d 15. e 6. White 6. 150 Ω ±5% 6. o 7. Brown 7. 390 Ω ±5% 7. f 8. Green 8. 560 Ω ±5% 8. b 9. Red 9. 680 Ω ±5% 9. n 10. Brown 10. 820 Ω ±5% 10. c What I know (Pres-Test) Independent Activity 1 Independent Assessment 1 1. b 11. a 1. (x) 1. 2. d 12. d 2. (√) 2. 3. d 13. a 3. (x) 3. 4. d 14. c 4. (√) 4. 5. c 15. a 5. (√) 5. 6. b 16. c 6. (x) 6. 7. a 17. a 7. (x) 7. 8. d 18. b 8. (√) 8. 9. b 19. c 9. (√) 9. 10. a 20. a 10. (x) 10.  19 Additional A. Puzzle B. PUZZLE 1. CURRENT 1. SILVER 2. INSULATOR 2. GREEN 3. WIRE 3. VIOLET 4. ELECTRICITY 4. ORANGE 5. RESISTOR 5. BLUE What Can I Do (page 13) Assessment (page 14-15) 1. 5,100Ω ±5% 1. b 11. C 2. Ampere/Amp 2. a 12. a 3. is made up of thin pure carbon film around it 3. a 13. a 4. is made up of thin metal film 4. d 14. d 5. Carbon film resistor is made up of thin pure carbon 5. a 15. a film around it while metal film resistor is made up of 6. a 16. c thin metal film. 7. d 17. d 8. a 18. c 9. a 19. a 10. a 20. d  References All about circuits. “Voltage, Current, Resistance”, accessed August 23, 2020. https://www.allaboutcircuits.com/worksheets/voltage-current-and-resistance/ Components101. “Carbon film versus Metal film”, accessed August 23, 2020. https://components101.com/articles/carbon-film-vs-metal-film- resistors#:~:text=As%20a%20matte r%20of%20fact%2C%20metal%20oxide%20film%20resistors%20work,Thus%2C%20ensuring%20less %20noise. Eepower. “Fixed resistor”. , accessed August 23, 2020. https://eepower.com/resistor-guide/resistor- types/fixed-resistor/# Electronics. “Resistor”, accessed August 22, 2020. https://www.electronics- tutorials.ws/resistor/res_7.html Electronics-notes. ‘’Resistance’’, accessed August 23, 2020. https://www.electronics- notes.com/articles/basic_concepts/resistance/what-is-resistance.php Electronics Hub. “Types of resistor”, accessed August 23, 2020. https://www.electronicshub.org/types-of-resistors/#Preset Concept Draw. “Schematic diagram of fixed resistor”, accessed August 23, 2020. https://www.conceptdraw.com/examples/schematic-diagram-of-fixed-resistor Fluke. ‘’Current’’, accessed August 22, 2020. https://www.fluke.com/en-ph/learn/best- practices/measurement-basics/electricity/what-is-current Fluke. ‘’Ohms Law’, accessed August 21, 2020. https://www.fluke.com/en-ph/learn/best- practices/measurement-basics/electricity/what-is-ohms-law Fluke. ‘’Resistance”, accessed August 20, 2020. https://www.fluke.com/en-ph/learn/best- practices/measurement-basics/electricity/what-is-resistance Tan, Marcelo E., & Cunanan, Reynaldo C., DepEd-Manila, Philippines. Consumer Electronics Servicing K to 12 – Technology and Livelihood Education (Exploratory Course Grades 7 & 8) Fluke. ‘’Voltage’’, accessed August 22, 2020. https://www.fluke.com/en-ph/learn/best- practices/measurement-basics/electricity/what-is-voltage Wikipedia. “Resistor”, accessed August 20, 2020. https://en.wikipedia.org/wiki/Resistor 20 For inquiries or feedback, please write or call: Department of Education, Schools Division of Bulacan Curriculum Implementation Division Learning Resource Management and Development System (LRMDS) Capitol Compound, Guinhawa St., City of Malolos, Bulacan 21