First slide

Force on a current carrying wire placed in a magnetic field

Question

There long straight wires A, B and C are carrying current as shown figure. Then the resultant force on B is directed

Easy

A

Towards A
B

Towards C
C

Perpendicular to the plane of paper and outward
D

Perpendicular to the plane of paper and inward

Solution

$F \propto i_{1} i_{2},$ so force on B due to C will be greater than that due to A. Hence, net force on B acts towards C.

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