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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2013
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Q)

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 ) a capacitance of reactance $X_C = X_L$ is included in the same circuit
( B ) number of turns in the coil is reduced
( C ) frequency of the AC source is decreased
( D ) an iron rod is inserted in the coil

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