A rectangle loop carrying a current i is situated near a long straight wire such that the wire is parallel to one of the sides of the loop and is in the plane of the loop. if steady current I is establish in the wire as shown in the figure, the loop will

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Rotate about an axis parallel to the wire

Move away from wire

Move towards the wire

Remain stationary

answer is C.

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Detailed Solution

A rectangle loop carrying a current

i

is situated near a long straight wire such that the wire is parallel to one of the sides of the loop and is in the plane of the loop. if steady current

I

is establish in the wire as shown in the figure, the loop will move towards the wire.
Let wire

A and B

two parallel wires carrying currents in the same direction attract each other. The wires will attract each other due to magnetic interaction. When current flows in the opposite direction, the wires repel one another. In the rectangle loop the distance is high on the sides where the opposite direction force is applied, so the force of repulsion will increase the net force of attraction on loop