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IBEW Aptitude Test Electrical Fundamentals Questions and Answers Flashcards

6 cards from real IBEW practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 IBEW Aptitude Test Electrical Fundamentals Questions and Answers flashcards as text

  1. What color is the neutral wire in a standard US household electrical circuit?

    Answer: White

    In US residential wiring, the white wire is neutral, black is hot, and green or bare copper is the ground.

  2. A GFCI outlet is designed primarily to protect against:

    Answer: Ground faults

    A Ground Fault Circuit Interrupter (GFCI) detects small ground fault currents and trips within milliseconds to prevent electrocution.

  3. What does AWG stand for in electrical wiring?

    Answer: American Wire Gauge

    American Wire Gauge (AWG) is the standardized system used in the US to indicate the diameter and current-carrying capacity of wire.

  4. In a parallel circuit with two 10Ω resistors, what is the total resistance?

    Answer: 5Ω

    For two equal resistors in parallel, total resistance = R/2, so 10Ω ÷ 2 = 5Ω.

  5. The standard single-phase outlet voltage in a US residential building is:

    Answer: 120V

    Standard US residential outlets supply 120V at 60Hz, provided by a single hot wire and a neutral wire.

  6. The green or bare copper wire in electrical wiring serves as the:

    Answer: Ground wire

    The green or bare copper wire is the equipment ground, providing a safe path for fault current to prevent electric shock.