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An alternating current of frequency 'f i...

An alternating current of frequency 'f isflowing in a circuit containing a resistance R and a choke L in series. The impedance of this circuit is

A

`R+2pifL`

B

`sqrt(R^2+4pi^2f^2L^2)`

C

`sqrt(R^2+L^2)`

D

`sqrt(R^2+2pifL)`

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CHETANA PUBLICATION-AC CIRCUITS-Exercise
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