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An AC voltage source of variable angular...

An AC voltage source of variable angular frequency `(omega)` and fixed amplitude `V_(0)` is 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 impedence of the circuit is unchanged

D

total impedence of the circuit increases

Text Solution

Verified by Experts

The correct Answer is:
B
`i_(rms)=V_(rms)/sqrt(R^(2)+1/(omega^(2)c^(2)))`
when `omega` increases, `i_(rms)` increases so the bulb glows brighter
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