The distance between two parallel wires carrying currents of 10 a and 20 a is 10 cm. determine the magnitude and direction of the magnetic force acting per unit length of the wires if the currents are carried in the same direction.

Explanation:

It is given that,

Current in wire 1, I₁ = 10 A

Current in wire 2, I₂ = 20 A

Distance between wires, d = 10 cm = 0.1 m

Force per unit length is given by :

So, the magnetic force acting per unit length of the wires . Since, the current is in same direction. So, the force is attractive in nature.

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