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NCCER Electrical module 3 (Intro to Electrical Circuits) Questions and Answers | Latest Version | 2024/2025 | Correct & Verified $9.41
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NCCER Electrical module 3 (Intro to Electrical Circuits) Questions and Answers | Latest Version | 2024/2025 | Correct & Verified
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NCCER Electrical module 3 (Intro to Electrical Circuits) Questions and Answers | Latest Version | 2024/2025 | Correct & Verified What is the purpose of a switch in an electrical circuit? A switch controls the flow of electricity by either opening or closing the circuit. What does "AC" s...

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  • December 10, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • nccer electrical module 3 intro to electrical cir

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  • NCCER Electrical module 3
  • NCCER Electrical module 3

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NCCER Electrical module 3 (Intro to
Electrical Circuits) Questions and
Answers | Latest Version | 2024/2025 |
Correct & Verified
What is the purpose of a switch in an electrical circuit?


✔✔A switch controls the flow of electricity by either opening or closing the circuit.




What does "AC" stand for in electrical terms?


✔✔AC stands for alternating current, which changes direction periodically.




What is the function of a ground fault circuit interrupter (GFCI)?


✔✔A GFCI detects differences in current between the hot and neutral wires and shuts off the

circuit if a ground fault is detected, preventing electrical shock.




What is the formula to calculate electrical power when only current and resistance are known?


✔✔The formula is P = I² × R, where P is power, I is current, and R is resistance.




What does "DC" stand for in electrical terms?


1

, ✔✔DC stands for direct current, which flows in one direction only.




What is the function of a relay in an electrical circuit?


✔✔A relay is an electrically operated switch used to control a high-power circuit with a low-

power signal.




What is the effect of increasing resistance in a circuit?


✔✔Increasing resistance decreases the current in the circuit, assuming the voltage remains the

same.




How do you calculate the voltage drop in a circuit?


✔✔Voltage drop is calculated by multiplying the current by the resistance in the part of the

circuit (V = I × R).




What is a short circuit?


✔✔A short circuit occurs when electricity flows along an unintended path with very low

resistance, potentially causing overheating or fire.




What is the function of a circuit breaker?

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