Q.

In an L.C.R. series a.c. circuit, the current

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a

may lags, may leads or may be in phase with the generator voltage

b

Is always in phase with the voltage

c

Always leads the generator voltage

d

Always lags the generator voltage

answer is D.

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Detailed Solution

tanϕ=VCVLVR(ifVC>VL)

=VLVCR(ifVL>VC)

Whereϕ  is angle between current & applied voltage

 

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