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Physics · 2023 · 1 mark
CBSE 2023 · Region 3 · Set 3 · Q3
Two thin long parallel wires A and B are separated by a distance r and carry current I each in the same direction. The force per unit length exerted…
Two thin long parallel wires A and B are separated by a distance r and carry current I each in the same direction. The force per unit length exerted by $\displaystyle A$ on wire $\displaystyle B$ is :
Official answer
(C)
$\displaystyle \frac{\mu_{0} \mathrm{I}^{2}}{2 \pi \mathrm{r}}$, attractive
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