Calculate the force per unit length on a long straight wire carrying current of 4 A due to a parallel wire carrying 6 A current . Distance between the wires is 3 cm.

Explanation

Here, `I_1 = 4 A, I_2 = 6A, and d= 3 cm, 0.03 m`.
`:.` Force per unit length on one wire due to the other = `(mu_0)/(4pi) cdot (2 I_1 I_2)/(d) = (10^(-7) xx 2 xx 4 xx 6)/(0.03) = 1.6 xx 10^(-4) T`.