A resistor of 6 Ω carries a current of 2 A. What is the potential difference across it?
Answer and explanation
Correct answer: D. 12 V
- Step 1: Ohm's law: V = IR. Step 2. V = 2 × 6 = 12 V. Answer: 12 V. Why not the others: 3 V is what you get if you divide R by I. 0.333 V is what you get if you divide I by R. 8 V is what you get if you add the numbers.
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