WBJEE · Physics · Capacitance
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
turn on?
- A Continues to increase gradually
- B Gradually increases for sometime and then becomes steady
- C Sharply rises initially and then gradually decreases
- D Gradually increases for sometime and then gradually decreases
Answer & Solution
Correct Answer
(C) Sharply rises initially and then gradually decreases
Step-by-step Solution
Detailed explanation
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.
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