Questions and Answers
What is the negatively charged particle of an atom?
What is the positively charged particle of an atom?
What is the central part of an atom?
What is the pressure that pushes the current?
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What are electrons pushed by the voltage to generate electricity?
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What lessens the current flow in the circuit?
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What is the rate of power consumed by an appliance?
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What does the acronym EMF stand for?
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What is the formula designed by George Sigmund Ohm?
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What is a material that allows the flow of electricity?
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What is a material that does not allow electricity to pass through?
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What part of the circuit controls the flow by turning on and off?
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What part of a circuit cuts off automatically when there are irregularities?
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What part of a circuit consumes electricity?
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What part of a circuit serves as the pathway of the current?
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What part provides power to a circuit?
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What source of energy is taken from the heat of the sun?
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What source of power is taken from the heat underground?
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What source of power is generated from burning coal?
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What source of power is generated from windmills?
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What source of power is generated from the pressure of moving water?
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What does 'A.C.' stand for?
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What does 'D.C.' stand for?
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What is the power utility that provides electrical energy in Metro Cebu?
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What is the power utility that provides electrical energy in Metro Manila?
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What power utility provides electrical energy in Lapulapu City?
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What power utility provides electrical energy in the towns of Cebu Province?
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What is the formula used for solving the unknown voltage?
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What is the formula used for solving the unknown current?
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What is the formula used for solving the unknown resistance?
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Match the following scientists with their contributions:
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Study Notes
Atomic Structure and Electricity
- Electrons are negatively charged particles within an atom.
- Protons are positively charged particles found in the nucleus of an atom.
- The nucleus serves as the atom's central core, containing protons and neutrons.
- Voltage is the pressure that drives electric current through a circuit.
- Current consists of electrons that flow due to voltage.
Circuit Components
- Resistance acts to limit current flow in an electrical circuit.
- Watts represent the rate of power consumed by an electrical appliance.
- EMF stands for Electromotive Force, a crucial concept in voltage generation.
- Ohm's Law defines the relationship between voltage (E), current (I), and resistance (R).
Conductors and Insulators
- Conductors allow electric current to pass through easily, while insulators do not.
- A switch is used to control the flow of electricity in a circuit, allowing for on/off operation.
- A fuse protects circuits by automatically cutting off electrical flow during irregularities, such as short circuits.
- A load refers to any component in a circuit that consumes electricity.
Power Sources
- Solar energy harnesses power from the sun's heat.
- Geothermal energy is derived from heat sourced underground.
- A coal-fired power plant generates electricity by burning coal.
- Wind energy is produced by harnessing the power of wind through turbines.
- Hydro energy is generated from the pressure of moving water.
Current Types
- AC stands for Alternating Current, which periodically changes direction.
- DC stands for Direct Current, where the flow of electric charge is constant and unidirectional.
Electrical Utilities
- VECO supplies electrical energy in Metro Cebu.
- MERALCO serves Metro Manila with electrical energy.
- CEBECO provides electricity in various towns of Cebu Province.
- MECO supplies power in Lapulapu City.
Formulas in Electronics
- The formula to calculate unknown voltage: E = IR.
- To find unknown current, use I = E/R.
- The formula for determining unknown resistance is R = E/I.
Historical Contributions to Electrical Technology
- Charles Swift is recognized as the founder of MERALCO.
- George Sigmund Ohm formulated Ohm's Law, linking voltage, current, and resistance.
- Guillermo Marconi invented the radio, enhancing communication technology.
- Thomas Edison is famous for inventing the light bulb.
- Michael Faraday made significant contributions to electromagnetism and electrochemistry.
Acronyms in Electrical Technology
- STEP stands for Students Technologists and Entrepreneurs of Philippines.
- VECO is the Visayan Electric Company.
- CEBECO represents Cebu Electric Cooperative.
- MERALCO indicates Manila Electric Company.
- MECO denotes Mactan Electric Company.
- UPS means Uninterrupted Power Supply, important for power consistency.
- AVR stands for Automatic Voltage Regulator.
- CFL refers to Compact Fluorescent Lamp, an energy-saving lighting option.
- AC/DC indicates Alternating Current / Direct Current.
- PECS signifies Personal Entrepreneurs Competencies, emphasizing entrepreneurship in technology.
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Description
Test your knowledge with this summative quiz focused on the fundamentals of atomic structure and electrical concepts. Answer multiple-choice questions that cover topics such as electrons, protons, and voltage. Perfect for students in an E.I.M course!
