Two long parallel copper wires carrying currents in the opposite directions of 5 A each. If the wires are separated by a distance of $0.5\;m$, then the force per unit length between the two wires is :

Question

( A ) $2 \times 10^5 N$ attractive force
( B ) $10^{-5}N$ attractive force
( C ) $10^{-5}N$ repulsive force
( D ) $10^{-5}N$ repulsive force

Comments

10^-5 N this is the answer explain the answer