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Standard XII

Physics

Conductivity and Resistivity

If the curren...

Question

If the current 3.0 A flowing in the primary coil is made zero in 0.1 sec, the emf induced in the secondary coil is 1.5 volt. The mutual inductance between the coils is

0.05 H

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0.5 H

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0.1 H

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0.2 H

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Solution

The correct option is A 0.05 H
$E_{i n d u c e} = - M \frac{d i}{d t} 1.5 = M \times \frac{3}{0.1} \Rightarrow M = 0.05 H$

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If the current 3.0 A flowing in the primary coil is made zero in 0.1 sec, the emf induced in the secondary coil is 1.5 volt. The mutual inductance between the coils is

The correct option is A 0.05 HEinduce=−Mdidt1.5=M×30.1⇒M=0.05 H

The correct option is A 0.05 H
$E_{i n d u c e} = - M \frac{d i}{d t} 1.5 = M \times \frac{3}{0.1} \Rightarrow M = 0.05 H$