Physics · 2020
JEE Main · 8 January 2020, Shift 2 · Q14
As shown in the figure, a battery of emf ε is connected to an inductor L and resistance R in series. The switch is closed at t =0. The total charge…
As shown in the figure, a battery of emf $\displaystyle \epsilon$ is connected to an inductor L and resistance R in series. The switch is closed at $\displaystyle \mathrm{t}=0$. The total charge that flows from the battery, between $\displaystyle \mathrm{t}=0$ and $\displaystyle \mathrm{t}=\mathrm{t}_{\mathrm{c}}\left(\mathrm{t}_{\mathrm{c}}\right.$ is the time constant of the circuit) is :Official answer
(1)
$\displaystyle \frac{\epsilon L}{\mathrm{eR}^2}$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.