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AIIMS2008PhysicsCurrent Electricity

A bulb and a condenser are connected in series with an A.C. source. On increasing the frequency of the source its brightness will

Options

  1. Aincrease
  2. Bdecrease
  3. Csometimes increase and sometimes decrease
  4. Dneither increase nor decrease.

Correct answer

A. increase

Step-by-step solution

With increase in frequency, reactance of L C circuit will increase. As a result, voltage increases. So, brightness will increase.

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