Question

two parallel infinitely long wires carry current of 20 amp and 40amp in opposite direction.another infinitely long wire carrying anti parallel to 20amp is placed midway between the two wires, the direction of net magnetic force on it will be?

Answer 1

Answer:so answer is towards 40amp wire

Explanation:

Use the right hand rule to get the answer. The wires attract each other if the current in the wires are flowing in the same direction and repel each other if the currents are flowing in opposite direction. So the net force on the 30A wire , pulls it toward the 40A wire.