1.

An alternating e.m.f. of 200 V and 50 cycles is connected to a circuit of resistance `3.142 Omega)` and inductance 0.01 H. The lag in time between the e.m.f. and the current isA. 1.5 msB. 2.5 msC. 3.5 msD. None of these

Answer» Correct Answer - B
`tan theta =(X_L)/(R)=1 :. Theta=45^(@)`
`t=theta xx("time period")/(360)`.


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