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An alternating current source of frequen...

An alternating current source of frequency `100 Hz` is joined to a combination of a resistance, a capacitance and a coil in series. The potential difference across the coil, the resistance and the capacitor is `46, 8 and 40` volt respectively. The electromotive force of alternating current source in volt is

A

`94`

B

`14`

C

`10`

D

`76`

Text Solution

Verified by Experts

The correct Answer is:
C
`V_(L)=46` volts, `V_(C)=40` volts, `V_(R)=8` volts
`E.M.F.` of source `V=sqrt(8^(2)+(46-40)^(2))=10`volts
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