Question

Two infinetely long, parallel wires are lying on the ground at distance a=1cm, a=1cm apart as shown in Fig. A third wire, of length L=10m and mass 400g, carries a current of I1=100A and is levitated above the first two wires, at a horizontal position midway between them. The infinitely long wires carry equal currents I1 and I1 in the same directions, but in the direction opposite that in the leviated wire. What current must the infinately long wires carry so that the three wires form an equilateral triangle?

Answer 1

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