A resistor has a potential difference of 12 V and a current of 3 A. What is its resistance?
Answer and explanation
Correct answer: A. 4 ohms, using resistance = potential difference / current
- Step 1: V = IR. Step 2. R = 12 / 3 = 4 ohms. Answer: 4 ohms, using resistance = potential difference / current. Why not the others: The others use the wrong operation.
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