An infinitely long current carrying wire and a small current carrying loop are in the plane of the paper. The radius of the loop is a and distance of its centre from the wire is d (>>a). If the loop applies a force F on the wire then :<p></p>

An infinitely long current carrying wire and a small current carrying loop are in the plane of the paper. The radius of the loop is a and distance of its centre from the wire is d (>>a). If the loop applies a force F on the wire then :

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Question:

An infinitely long current carrying wire and a small current carrying loop are in the plane of the paper. The radius of the loop is a and distance of its centre from the wire is d (>>a). If the loop applies a force F on the wire then :

Solution: