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A coil of self-inductance L is connected...

A coil of self-inductance L is connected in series with a bulb B and an AC source. Brightness of the bulb decreases when

A

an iron rod is inserted in the coil

B

frequency of the AC source is decreases.

C

number of turns in the coil is reduced .

D

a capacitance of reactance`X_(C) = X_(L)` is included in the same circuit

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The correct Answer is:
A
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