Podcast
Questions and Answers
What type of circuit allows electrons to flow in more than one path?
What type of circuit allows electrons to flow in more than one path?
A circuit breaker is designed to allow current to flow even when it is too high.
A circuit breaker is designed to allow current to flow even when it is too high.
False (B)
What is the unit for electrical resistance?
What is the unit for electrical resistance?
Ohm
A __________ cell can be recharged and reused many times.
A __________ cell can be recharged and reused many times.
Signup and view all the answers
What does the 'A' in AC current stand for?
What does the 'A' in AC current stand for?
Signup and view all the answers
The term 'thermal' is synonymous with heat.
The term 'thermal' is synonymous with heat.
Signup and view all the answers
Match the following electrical components with their primary function:
Match the following electrical components with their primary function:
Signup and view all the answers
What type of electricity flows in one direction?
What type of electricity flows in one direction?
Signup and view all the answers
The basic particle of electricity is called an __________.
The basic particle of electricity is called an __________.
Signup and view all the answers
What happens to a wire if too much current flows through it?
What happens to a wire if too much current flows through it?
Signup and view all the answers
Which type of resource is constantly replenished and is considered the best?
Which type of resource is constantly replenished and is considered the best?
Signup and view all the answers
Lightning rods create a safe path for lightning to enter buildings.
Lightning rods create a safe path for lightning to enter buildings.
Signup and view all the answers
What is the term used for a charged atom?
What is the term used for a charged atom?
Signup and view all the answers
The process of losing an electric charge is called ______.
The process of losing an electric charge is called ______.
Signup and view all the answers
Match the following concepts with their definitions:
Match the following concepts with their definitions:
Signup and view all the answers
What type of electricity is characterized by an imbalance of charge on a surface?
What type of electricity is characterized by an imbalance of charge on a surface?
Signup and view all the answers
Protons have a negative electric charge.
Protons have a negative electric charge.
Signup and view all the answers
What is created from a giant spark between clouds and the ground?
What is created from a giant spark between clouds and the ground?
Signup and view all the answers
In charging by induction, the charging objects ______ touch the other.
In charging by induction, the charging objects ______ touch the other.
Signup and view all the answers
When two like charges are brought together, what will happen?
When two like charges are brought together, what will happen?
Signup and view all the answers
What is the unit and symbol for voltage?
What is the unit and symbol for voltage?
Signup and view all the answers
A voltmeter is used to measure current in a circuit.
A voltmeter is used to measure current in a circuit.
Signup and view all the answers
What is the primary function of a ground pin in electrical plugs?
What is the primary function of a ground pin in electrical plugs?
Signup and view all the answers
The law that relates voltage, current, and resistance is known as _______.
The law that relates voltage, current, and resistance is known as _______.
Signup and view all the answers
Match the following electrical components with their characteristics:
Match the following electrical components with their characteristics:
Signup and view all the answers
What happens when one bulb burns out in a series circuit?
What happens when one bulb burns out in a series circuit?
Signup and view all the answers
In a parallel circuit, the current is the same at every point in the circuit.
In a parallel circuit, the current is the same at every point in the circuit.
Signup and view all the answers
Name two types of appliances that typically use 240 V.
Name two types of appliances that typically use 240 V.
Signup and view all the answers
When wiring a house, larger diameter cables are used because they can carry _______.
When wiring a house, larger diameter cables are used because they can carry _______.
Signup and view all the answers
What is the voltage on each lamp in a parallel circuit if the battery voltage is 30 V?
What is the voltage on each lamp in a parallel circuit if the battery voltage is 30 V?
Signup and view all the answers
Flashcards
Voltage
Voltage
The difference in electric potential energy per unit charge between two points in a circuit.
Resistance
Resistance
The opposition to the flow of electric current in a circuit.
Current
Current
The rate of flow of electric charge past a point in a circuit.
Ohm's Law
Ohm's Law
Signup and view all the flashcards
Series Circuit
Series Circuit
Signup and view all the flashcards
Parallel Circuit
Parallel Circuit
Signup and view all the flashcards
Variable Resistor
Variable Resistor
Signup and view all the flashcards
Ground Fault Circuit Interrupter (GFI)
Ground Fault Circuit Interrupter (GFI)
Signup and view all the flashcards
Open Circuit
Open Circuit
Signup and view all the flashcards
Closed Circuit
Closed Circuit
Signup and view all the flashcards
Ohm
Ohm
Signup and view all the flashcards
Fuse
Fuse
Signup and view all the flashcards
Switch
Switch
Signup and view all the flashcards
Direct Current (DC)
Direct Current (DC)
Signup and view all the flashcards
Transformer
Transformer
Signup and view all the flashcards
Power
Power
Signup and view all the flashcards
Electric Circuit
Electric Circuit
Signup and view all the flashcards
Primary Cells
Primary Cells
Signup and view all the flashcards
Friction Charging
Friction Charging
Signup and view all the flashcards
Conductor
Conductor
Signup and view all the flashcards
Electric Spark
Electric Spark
Signup and view all the flashcards
Electroscope
Electroscope
Signup and view all the flashcards
Induction Charging
Induction Charging
Signup and view all the flashcards
Insulator
Insulator
Signup and view all the flashcards
Ion
Ion
Signup and view all the flashcards
Conduction Charging
Conduction Charging
Signup and view all the flashcards
Electrostatic Force
Electrostatic Force
Signup and view all the flashcards
Charge Separation
Charge Separation
Signup and view all the flashcards
Study Notes
Electricity Chapter 13 Review
-
Potential Difference (Voltage): Voltage is the difference in electric potential energy per unit charge measured between two points. Defined as the difference in electric potential energy per unit charge.
-
Voltage Unit and Symbol: Unit is Volts (V), Symbol is V
-
Voltage Measurement: Measured with a voltmeter.
-
Voltmeter Connection: Connected in parallel in a circuit.
-
Resistance in Circuits: Resistance is the opposition to the flow of electric current.
-
Resistance Unit and Symbol: Unit is Ohms (Ω), Symbol is Ω
-
Resistance Measurement: Measured with an ohmmeter.
-
Variable Resistor: A variable resistor allows adjustable resistance in a circuit.
-
Ohm's Law: Current (I) equals voltage (V) divided by resistance (R). (I = V/R)
-
Resistance Calculation: Resistance equals voltage divided by current. (R = V/I)
-
Current Calculation: Current equals voltage divided by resistance. (I = V/R)
-
Example Calculation: For a heater with 38 ohms and 240 V, calculate current: I = 240 V / 38 Ω = 6.32 A
Series vs. Parallel Circuits
-
Series Circuit Difference: In a series circuit, components are connected in a single path.
-
Series Bulb Failure: If one bulb burns out in a series circuit, all other bulbs go out.
-
Parallel Circuit Difference: In a parallel circuit, components are connected in multiple paths.
-
Parallel Bulb Failure: If one bulb burns out in a parallel circuit, the other bulbs remain lit.
-
Parallel Circuit Current: The current is the same in any part of a parallel circuit.
-
Series Circuit Current: The current is the same in every part of a series circuit.
-
Series Circuit Voltage Division: Voltage is divided among components in a series circuit proportionally to their resistance.
-
Parallel Circuit Voltage: Voltage is the same across each component in a parallel circuit.
Practical Wiring
-
Household Wiring: Most household circuits are wired in parallel.
-
Larger Diameter Cables: Larger diameter cables are used for high-current applications or long-distance transmission lines to reduce resistance.
Safety
-
High Voltage Appliances: Examples of appliances that typically use 240 volts include electric stoves and ovens etc
-
Grounding Pins: Grounding pins provide a path for fault currents to ground.
-
Ground Fault Interrupter (GFI): A Ground Fault Interrupter (GFI) is a safety device that senses a small current leakage to ground and immediately interrupts the circuit to prevent electric shock.
-
Bathroom GFI Use: GFI outlets are commonly found in bathrooms to provide a safety measure for people who might be wet.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz focuses on key concepts from Chapter 13 of Electricity, including potential difference (voltage), resistance, and Ohm's Law. Test your understanding of voltage measurements, the use of voltmeters and ohmmeters, and the relationships among current, voltage, and resistance. Prepare to reinforce your knowledge with practical applications.