Physics · 2019
JEE Main · 9 April 2019, Shift 1 · Q20
A rigid square loop of side ' a ' and carrying current I_2 is lying on a horizontal surface near a long current I_1 carrying wire in the same plane…
A rigid square loop of side ' $\displaystyle a$ ' and carrying current $\displaystyle \mathrm{I}_2$ is lying on a horizontal surface near a long current $\displaystyle \mathrm{I}_1$ carrying wire in the same plane as shown in figure. The net force on the loop due to the wire will be :
Official answer
(3)
Repulsive and equal to $\displaystyle \frac{\mu_0 \mathrm{I}_1 \mathrm{I}_2}{4 \pi}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.