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An AC voltage source of variable angular...

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

A

the bulb glows dimmer

B

the bulb glows brighter

C

total impedance of the circuit is unchanged

D

total impedance of the circuit increases

Text Solution

Verified by Experts

The correct Answer is:
B
Impedance `Z=sqrt(((1)/(omega C))^(2)+R^(2))`
as `omega` increases, Z decreases. Hence, bulb will glow brighter.
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