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In an ac circuit an alternating voltage ...

In an ac circuit an alternating voltage `e = 200 sqrt(2) sin 100t` volts is connected to a capacitor of capacity 1 `muF.` The rms.value of the current in the circuit is

A

10 mA.

B

100 mA.

C

200 mA.

D

20 mA.

Text Solution

Verified by Experts

The correct Answer is:
D
(d) :
`V = 200sqrt(2) sin 100 t `
`omega = 100 rad//s V_("rms")= 200 V `
Current in the cicuit
`I_("rms") = (V_("rms"))/(X_("C"))= (V_("rms"))/((1)/(omegaC))`
`= omegaC V_("rms") `
`= 100 xx1 xx10^(-6) xx200 = 20 mA`
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