Three long straight wires, carries currents are arranged according to figure.
Magnetic force on 10cm part of of wire Q is :-
(1) 16 x 10^-9 N, towards right
(2) 16 x 10^-8N, towards right
(3) 16 x 10^-8 N, towards left
(4) 16 x 10^-9 N, towards left
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sorry sorry I'd no this ans
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