Question 201: Electromagnetic Induction

Question

When magnetic flux changes from $6.5 	imes 10^{-2} \mathrm{~Wb}$ to $11 	imes 10^{-2} \mathrm{~Wb}$ and the change in current is 0.03 A , the coefficient of mutual inductance will be

Accepted Answer

Mutual Inductance $\mathrm{M}=\frac{\Delta \phi}{\Delta \mathrm{I}}$
$$ \begin{aligned} \Delta \phi=\phi_2-\phi_1 & =(11-6.5) 	imes 10^{-2} \mathrm{~Wb} \ & =4.5 	imes 10^{-2} \mathrm{~Wb} \end{aligned} $$
Change in current $\Delta \mathrm{I}=0.03 \mathrm{~A}$
$$ 	herefore \quad M=\frac{\Delta \phi}{\Delta I}=\frac{4.5 	imes 10^{-2}}{0.03}=1.5 \mathrm{H} $$

Answer

1.0 H

Answer

1.2 H

Answer

1.5 H

Answer

1.8 H

Electromagnetic Induction

When magnetic flux changes from 6.5 \times 10^{-2} \mathrm{~Wb} to 11 \times 10^{-2} \mathrm{~Wb} and the change in current is 0.03 A , the coefficient of mutual inductance will be

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