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The resistance of a coil for DC is in oh...

The resistance of a coil for DC is in ohms. In AC, the resistance

A

Will remain same

B

Will increases

C

Will decrease

D

Will be zero

Text Solution

Verified by Experts

The correct Answer is:
B

The coil having inductance `L` besides the resistance `R`. Hence for AC its effective resistance `sqrt(R^(2)+X_(L)^(2))` will be larger then its resistance `R ` for `DC`.
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