Q.

In an A.C. circuit the current

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a

May lead or lag behind or be in phase with the voltage

b

Always leads the voltage 

c

Always lags behind the voltage 

d

Is always in phase with the voltage 

answer is D.

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Detailed Solution

In pure resistance circuit the current is in phase with voltage.

And in circuits of different combinations of R, L and C the current and voltage are in different phases of leading ahead or lagging behind depending on the values.

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In an A.C. circuit the current