A) \[12\,\Omega \]
B) \[40\,\Omega \]
C) \[\sqrt{(52\times 25)}\Omega \]
D) \[360\,\Omega \]
Correct Answer: A
Solution :
[a] In an ac circuit, a pure indcutor does not consume any power. Therefore, power is consumed by the resistor only. \[\therefore \,\,\,P=I_{v}^{2}R\] or \[108={{(3)}^{2}}R\] or \[R=12\Omega \]
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