MHT CET 2022 Physics question

Physics Alternating Current MHT CET 2022

An AC voltage source of variable angular frequency '' and fixed amplitude is connected in series with a capacitance C and an electric bulk of resistance 'R' (inductance zero). When '' is increased

(A)total impedance of the circuit increases.
(B)the bulb glows brighter.Correct
(C)the bulb glows dimmer.
(D)total impedance of the circuit is unchanged.

Answer: (B)

Solution

In a series RC circuit the impedance is with capacitive reactance . When increases, decreases, so decreases. With the source amplitude fixed, the current increases, so the power

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Question ID VK-093455