If V = 9 V and I = 3 A, what is the resistance R?

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Prepare for the NCCER Introduction to Electrical Circuits exam. Utilize flashcards and multiple choice questions with hints and explanations to excel on your test.

Multiple Choice

If V = 9 V and I = 3 A, what is the resistance R?

Explanation:
Understanding how Ohm's Law relates voltage, current, and resistance helps here. Ohm's Law states V = I × R, so to find resistance, use R = V ÷ I. With V = 9 volts and I = 3 amperes, R = 9 ÷ 3 = 3 ohms. A quick check: I × R = 3 A × 3 Ω = 9 V, which matches the given voltage. The resistance is 3 ohms.

Understanding how Ohm's Law relates voltage, current, and resistance helps here. Ohm's Law states V = I × R, so to find resistance, use R = V ÷ I. With V = 9 volts and I = 3 amperes, R = 9 ÷ 3 = 3 ohms. A quick check: I × R = 3 A × 3 Ω = 9 V, which matches the given voltage. The resistance is 3 ohms.

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