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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. If a circuit has 120V and 10Ω of resistance, what is the current flowing through it?

    Answer: 12A

    Using Ohm's Law: I = V ÷ R = 120 ÷ 10 = 12 amperes.

  2. Electrical power in watts is calculated as:

    Answer: Voltage × Current

    Power (P) = Voltage (V) × Current (I), so a circuit drawing 10A at 120V consumes 1,200 watts.

  3. A 60-watt light bulb connected to a 120V circuit draws how many amperes?

    Answer: 0.5A

    Using I = P ÷ V: 60W ÷ 120V = 0.5 amperes.

  4. What is the primary purpose of electrical conduit in an installation?

    Answer: To protect and route electrical wiring

    Conduit is a protective tubing or channel used to shield electrical wires from physical damage and environmental hazards.

  5. Alternating current (AC) differs from direct current (DC) because AC:

    Answer: Reverses direction periodically

    AC current reverses direction at regular intervals (60 times per second in the US), while DC flows continuously in one direction.

  6. The National Electrical Code (NEC) is primarily used by electricians to:

    Answer: Ensure safe electrical installations

    The NEC (NFPA 70) is the benchmark for safe electrical design and installation in the United States, adopted by most jurisdictions.