Two thin, long, parallel wires, separated by a distance 'd' carry a current of 'i' A in the same direction. They will

Options

A. Attract each other with a force of `mu_(0) i^(2) // (2pi d^(2))`
B. Repel each other with a force of `mu_(0) i^(2)// (2pi d^(2))`
C. Attract each other with a force of `mu_(0)i^(2)// (2pi d)`
D. Repel each other with a force of `mu_(0) i^(2)// (2pi d)`

Answer

C

Explanation

`F = (mu_(0) i^2)/(2pi d)` [Attractive]