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Two very long, straight parallel wires P...

Two very long, straight parallel wires P and Q carry currents `5A` and `10A` respectively and are at a distance of `10cm` apart, as shown in figure. If a third wire R (length `10cm`) having a current of `5A` is placed in middle between them, how much force will be acting on R? The direction of current in all the wires is the same.

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