Physics · 2020
JEE Main · 5 September 2020, Shift 2 · Q14
An infinitely long straight wire carrying current I, one side opened rectangular loop and a conductor C with a sliding connector are located in the…
An infinitely long straight wire carrying current I, one side opened rectangular loop and a conductor $\displaystyle C$ with a sliding connector are located in the same plane, as shown in the figure. The connector has length $\displaystyle l$ and resistance R. It slides to the right with a velocity $\displaystyle v$. The resistance of the conductor and the self inductance of the loop are negligible. The induced current in the loop, as a function of separation r, between the connector and the straight wire is :
Official answer
(2)
$\displaystyle \frac{\mu_0}{2 \pi} \frac{\mathrm{I} v l}{\mathrm{Rr}}$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.