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  • The coefficient of mutual inductance of the two coils is 0.5 H. If the current is increased from 2A to 3 A in 0.01 sec. in one of them, then the induced e.m.f. in the second coil is :<div class

The coefficient of mutual inductance of the two coils is 0.5 H. If the current is increased from 2A to 3 A in 0.01 sec. in one of them, then the induced e.m.f. in the second coil is :

Option: 1

25 V


Option: 2

50 V


Option: 3

75 V


Option: 4

100 V


Answers (1)

best_answer

\mathrm{\begin{aligned} & M=0.5 \mathrm{H} \\ & \quad e=-M \frac{d i}{d t} \\ & \quad \therefore \quad e=-0.5 \times \frac{1}{0.01} \text { volt }=50 \mathrm{~V} \end{aligned}}

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manish

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