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  • The mutual inductance of a pair of coils is 2 H. If the current in one of the coils changes from 10 A to zero in 0.1 s, the emf induced in the other coil isOptio

The mutual inductance of a pair of coils is 2 H. If the current in one of the coils changes from 10 A to zero in 0.1 s, the emf induced in the other coil is

Option: 1

2 V 


Option: 2

20 V


Option: 3

0.2 V


Option: 4

200 V


Answers (1)

best_answer

The induced emf in the other coil (coil 2) is

\mathrm{\begin{aligned} e_2 & =-M \frac{d i_1}{d t}=-M \frac{\Delta i_1}{\Delta t}=-M \frac{\left(i_2-i_1\right)}{\Delta t}=-\frac{2(0-10)}{0.1} \\ & =200 \mathrm{~V} \end{aligned}}

 

Posted by

shivangi.bhatnagar

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