The magnitude of flux linked with coil varies with time as $\phi=3 t^2+4 t+7$. The magnitude of induced e.m.f. at $t=2 \mathrm{~s}$ is

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Aicharya · Accepted Answer

$\begin{aligned} & \phi=3 t^2+4 t+7 \ & |e|=\frac{d \phi}{d t}=6 t+4 \ & 	ext { At } t=2 s,|e|=16 V\end{aligned}$ .

The magnitude of flux linked with coil varies with time as $\phi=3 t^2+4 t+7$. The magnitude of induced e.m…