Two parallel wires in free space are $10\, cm$ apart and each carries a current of $10\, A$ in the same direction. The force one wire exerts on the other per metre of length is
Two parallel wires in free space are $10\, cm$ apart and each carries a current of $10\, A$ in the same direction. The force one wire exerts on the other per metre of length is
- [AIPMT 1997]
- A
$2 \times {10^{ - 4}}\,N$, attractive
- B
$2 \times {10^{ - 4}}\,N$, repulsive
- C
$2 \times {10^{ - 7}}\,N$, attractive
- D
$2 \times {10^{ - 7}}\,N$, repulsive
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- [KVPY 2016]
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