Question

An electric bulb, a capacitor, a battery and a switch are all in series in a circuit. How does the intensity of light vary when the switch is turned on ?
(A) Continues to increase gradually.
(B) Gradually increases for some time and then becomes steady.
(C) Sharply rises initially and then gradually decreases.
(D) Gradually increases for some time and then gradually decreases.

Answer 1

Ans : (C) Initially there will be no voltage drop across capacitor so intensity of bulb will rise sharply and gradually voltage drop across capacitor will increase as a result voltage drop across bulb decreases so intensity of bulb will decreases

Answer 2

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Answer 3

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