The resistance of a coil for D.C. is in ...

The resistance of a coil for D.C. is in ohms. In A.C. the resistance ......

will remain same

will increase

will decrease

will be zero.

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The correct Answer is:

The resistance of a coil for D.C. is only R. Where for A.C. the resistance is `sqrt(R^2+X_L)` so, for A.C. supply resistance is more or increase.

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