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Two parallel wires in free spaces are 10...

Two parallel wires in free spaces are 10cm apart and each carries a current of 10A in the same direction. The force one wire exerts on the other per metre of length is

A

`2xx10^-4` N(attractive)

B

`2xx10^-7` N(attractive)

C

`2xx10^-4` N(repulsive)

D

`2xx10^-7` N(repulsive)

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