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NSAA Physics - Electricity and Magnetism Flashcards

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

Read the first 6 NSAA Physics - Electricity and Magnetism flashcards as text

  1. A resistor has a voltage of 12 V across it and a current of 3 A through it. What is its resistance?

    Answer: 4 Ω

    Using Ohm's Law: R = V/I = 12/3 = 4 Ω.

  2. Three resistors of 2 Ω, 3 Ω, and 5 Ω are connected in series. What is the total resistance?

    Answer: 10 Ω

    In series, total resistance = 2 + 3 + 5 = 10 Ω.

  3. Two resistors of 6 Ω and 3 Ω are connected in parallel. What is the combined resistance?

    Answer: 2 Ω

    1/R = 1/6 + 1/3 = 1/6 + 2/6 = 3/6 = 1/2, so R = 2 Ω.

  4. A charge of 4 C passes through a wire in 2 seconds. What is the electric current?

    Answer: 2 A

    Current I = Q/t = 4/2 = 2 A.

  5. A 60 W bulb runs on a 120 V supply. What current does it draw?

    Answer: 0.5 A

    Current I = P/V = 60/120 = 0.5 A.

  6. What happens to the resistance of a metallic conductor as its temperature increases?

    Answer: Increases

    In metallic conductors, higher temperature increases lattice vibrations, increasing resistance.

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