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An Ac circuit with f=1000 Hz consists of...

An Ac circuit with f=1000 Hz consists of a cail of 200 mH and negligible resistance. Calculate the voltage across the coil, if the effective current of 5 mA is flowing.

A

`7.64 V_((rms))`

B

`7.452 V_((rms))`

C

`6.28 V_((rms))`

D

`74.62_((rms))`

Text Solution

Verified by Experts

The correct Answer is:
C
Inductive reactance
`X_(L) = Lomega = 2pifL`
Also, `(E )/(l) = Lomega = X_(L)`
`rArr E = lX_(L)`
`therefore E = (5)/(1000) xx 1256`
`E = 6.28V_((rms))`
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