Three long, straight and parallel wires carrying current are arranged as shown in figure. The force experienced by $$10$$ cm length of wire Q is

Question

Three long, straight and parallel wires carrying current  are arranged as shown in figure. The force experienced by $$10$$ cm length of wire Q is

Infinity Learn · Accepted Answer

Force on wire Q due to wire P is $$FP=$$ $$10$$−$$7$$ × $$2$$ × $$30$$ × $$100.1$$×$$0.1=$$  $$6$$ × $$10$$−$$5N$$                                                      (Towards$$ $$Left)Force$$ on wire Q due to wire R $$isFR=$$ $$10$$−$$7$$ × $$2$$ × $$20$$ × $$100.02$$×$$0.1=$$  $$20$$ × $$10$$−$$5N$$                                                        $$(Towards$$ $$Right)Hence$$  Fnet $$=FR$$−FP $$=14$$ × $$10$$−$$5N=$$ $$1.4$$ × $$10$$−$$4N$$                                                        $$(Towards$$ $$Right)

Three long, straight and parallel wires carrying current are arranged as shown in figure. The force experienced by 10 cm length of wire Q is

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