Two thin long parallel wires, separated by a distance $d$ carry a current of $I$ $amp$ in the same direction. They will
Two thin long parallel wires, separated by a distance $d$ carry a current of $I$ $amp$ in the same direction. They will
- A
attract each other with a force of $\mu_0I^2/2 \pi d^2$ per unit length.
- B
repel each other with a force of $\mu_0I^2/2 \pi d^2$ per unit length.
- C
attract each other with a force of $\mu_0I^2/2 \pi d$ per unit length.
- D
repel each other with a force of $\mu_0I^2/2 \pi d$ per unit length.
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- [AIPMT 1998]