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

(a) Towards A

(b) Towards C

(c) Perpendicular to the plane of paper and outward

(d) Perpendicular to the plane of paper and inward

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

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