Question

if two parallel wires carrying equal currents in the same direction are placed at a small distance apart then​

Answer 1

answer : force are attractive .

explanation : when two parallel wires of carrying equal current in the same direction are placed at small distance apart then force acts between them is attractive , means one wire attracts other.

Let i be the current passing through each wire and d is the seperation between the wire then, magnitude of force per unit length acts by first wire to other is given by, $\frac{F}{l}=\frac{\mu i^2}{2\pi d}$, where $\mu_0$ is permeability of medium and value of $\mu_0$ = 4π × 10^-7 H/m.

Answer 2

Answer:

An attractive force acts between them.