Physics - EMI/AC Question with Solution | TestHub

An inductor of $10\text{mH}$ is connected to a $20\mathrm{V}$ battery through a resistor of $10k\Omega$ and a switch. After a long time, when maximum current is set up in the circuit, the current is switched off. The current in the circuit after $1\text{μs}$ is $\frac{x}{100}\text{mA}$. Then $x$ is equal to ______ . (Take $e^{-1}=0.37$)