A series L-R circuit is connected... | EMI

JEE MAIN 2020

04.09.20_S2

Question

A series L-R circuit is connected to a battery of emf $V$. If the circuit is switched on at $t=0$, then the time at which the energy stored in the inductor reaches $\left(\frac{1}{n}\right)$ times of its maximum value, is

Select the correct option:

$\frac{\mathrm{L}}{\mathrm{R}} \ln \left(\frac{\sqrt{\mathrm{n}}+1}{\sqrt{\mathrm{n}}-1}\right)$

$\frac{L}{R} \ln \left(\frac{\sqrt{n}}{\sqrt{n}-1}\right)$

$\frac{L}{R} \ln \left(\frac{\sqrt{n}}{\sqrt{n}+1}\right)$

$\frac{L}{R} \ln \left(\frac{\sqrt{n}-1}{\sqrt{n}}\right)$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Physics

Hard

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