MHT CET 2024 Physics question

Physics Alternating Current MHT CET 2024

A light bulb connected in series with a capacitor and an a.c. source is glowing with a certain brightness. On reducing the capacity of capacitance and frequency of source, the brightness of the lamp (respectively)

(A)is reduced, is increased
(B)is reduced, is reducedCorrect
(C)is increased, is reduced
(D)is increased, is increased

Answer: (B)

Solution

The current in the series R-C circuit is with capacitive reactance , and the brightness of the bulb depends on . Reducing the capacitance increases , so the current falls and the lamp dims. Reducing the frequency

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Question ID VK-099635