alleryStart learning →A 9 V supply drives 3 A through a coil. What is the coil's resistance?
A27 ohms
B3 ohms
C6 ohms
D12 ohms
Answer & Solution
Correct answer: B. 3 ohms
Resistance is voltage divided by current, which is 9 V divided by 3 A, giving 3 ohms.
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