Two thin long parallel wires A and B are separated by a distance r and carry current I…

Physics · Class 12 · CBSE — Moving Charges and Magnetism

1. \(\frac{\mu_0 \mathrm{I}}{2 \mathrm{r}}\) , attractive
2. \(\frac{\mu_0 I^2}{2 \pi r}\) , repulsive
3. \(\frac{\mu_0 \mathrm{I}}{2 \pi \mathrm{r}}\) , repulsive
4. \(\frac{\mu_0 \mathrm{I}^2}{2 \pi \mathrm{r}}\) , attractive

Answer

(D) _0 I ^2 2 r , attractive

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