Consider two long, straight, parallel conductors A and B separated by a distance d . They…
Physics · Class 12 · CBSE — Moving Charges and Magnetism
Consider two long, straight, parallel conductors A and B separated by a distance \(d\) . They carry steady current \(I\) in the same direction. The force acting on unit length of conductor B due to conductor A is:
- \(\frac{\mu_{0}}{2 \pi} \frac{{I}^{2}}{{~d}}\) and is attractive
- \(\frac{\mu_{0}}{2 \pi} \frac{{I}^{2}}{{~d}}\) and is repulsive
- \(\frac{\mu_{0}}{4 \pi} \frac{{I}^{2}}{{~d}}\) and is attractive
- \(\frac{\mu_{0}}{4 \pi} \frac{{I}^{2}}{{~d}}\) and is repulsive
Answer
(A) _ 0 2 I ^ 2 ~d and is attractive
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