1) Two coils have a mutual inductance 0.005 H. The current changes in the first coil according to equation I = I0 sin ωt, where I0 = 10A and ω: 100 π radian/sec. The maximum value of e.m.f in the second coil is A) 2p B) 5p C) p D) 4p Answer: Option BExplanation:$e = M\frac{di}{dt} = 0.005\frac{d}{dt}(I_{0}\sin\omega t)$ $0.0005(I_{0}\omega\cos\omega t)$ = $\therefore e_{max}=0.005\times10\times100\pi=5\pi [ cos\omega t=1]$
