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NCCER Electrical Theory Lvl 1 Module 4 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified $9.49
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NCCER Electrical Theory Lvl 1 Module 4 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified
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NCCER Electrical Theory Lvl 1 Module 4 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified How does an electrical meter measure energy consumption? An electrical meter measures the amount of electricity used in kilowatt-hours (kWh). What is the role of a switch in an...

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  • December 18, 2024
  • 15
  • 2024/2025
  • Exam (elaborations)
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NCCER Electrical Theory Lvl 1 Module 4
Questions and Answers | Latest Version
| 2024/2025 | Correct & Verified
How does an electrical meter measure energy consumption?


✔✔ An electrical meter measures the amount of electricity used in kilowatt-hours (kWh).




What is the role of a switch in an electrical circuit?


✔✔ A switch controls the flow of electricity, allowing the user to turn the circuit on or off.




What is a magnetic field?


✔✔ A magnetic field is a region around a magnetic material where magnetic forces can be felt.




What is the relationship between voltage, current, and resistance?


✔✔ Voltage equals current multiplied by resistance (V = IR), according to Ohm’s Law.




What is voltage?


✔✔ Voltage is the electrical potential difference between two points, driving the flow of current.




1

, What is the unit of measurement for electrical current?


✔✔ The unit for electrical current is the ampere (A).




What does Ohm’s Law state?


✔✔ Ohm’s Law states that voltage equals current times resistance (V = IR).




What is resistance in an electrical circuit?


✔✔ Resistance is the opposition to the flow of electric current, measured in ohms (Ω).




Why is a circuit breaker important in an electrical system?


✔✔ A circuit breaker protects the system from overloads by interrupting the flow of electricity

when necessary.




What is the difference between AC and DC current?


✔✔ AC (alternating current) reverses direction periodically, while DC (direct current) flows in

one constant direction.




What is a conductor?


2

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