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Two long straight wires P and Q carrying cqual current 10A cach were kept parallel to each other at 5 cm distance. Magnitude of

Two long straight wires P and Q carrying cqual current 10A cach were kept parallel to each other at 5 cm distance. Magnitude of magnetic force experienced by 10 cm length of wire P is F. If distance between wires is halved and currents on them are doubled, force F on 10 cm length of wire P will be: (1) 8 F (3) F/8 (2) 10 F (4) F,/10

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