In the given circuit the sliding contact is pulled outwards such that electric current in the circuit changes at the rate of $8 \mathrm{~A} / \mathrm{s}$. At an instant when R is $12 \Omega$, the value of the current in the circuit will be ______ A.

Question

Aicharya · Accepted Answer

$\begin{aligned} & \varepsilon-\frac{\mathrm{LdI}}{\mathrm{dt}}-\mathrm{IR}=0 \ & 12-3 	imes(-8)-\mathrm{I} 	imes 12=0 \ & \mathrm{I}=3\end{aligned}$

In the given circuit the sliding contact is pulled outwards such that electric current in the circuit…

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