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An alternating e.m.f. of 200 V and 50 cycles is connected to a circuit of resistance 3.142Ω and inductance 0.01 H. The lag in time between the e.m.f. and the current is
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a
1.5 ms
b
2.5 ms
c
3.5 ms
d
None of these
answer is B.
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Detailed Solution
tanθ=XLR=1 ∴θ=450t=θ×Time period 360
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