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Power dissipated in an L-C-R series circ...

Power dissipated in an `L-C-R` series circuit connected to an `AC` source of emf `epsilon` is

A

`E^(2) R//[ R^(2)+ (Lomega-(1)/(Comega))^(2)]`

B

`(E^(2)sqrt(R^(2)+(Lomega-(1)/(Comega))^(2)))/(R)`

C

`(E^(2)[R^(2)+(Lomega-(1)/(Comega))^(2)])/(R)`

D

`(E^(2)R)/(sqrt(R^(2)+(Lomega-(1)/(Comega))^(2)))`

Text Solution

Verified by Experts

The correct Answer is:
A
`P = E_(rms) I_(rms) cos phi = (E^(2) R)/(z^(2)) = (E^(2) R)/([R^(2) + (omegaL - (1)/(omegaC))^(2)])`
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