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Two long current carrying conductors are...

Two long current carrying conductors are placed parallel to each other at a distance of 8cm between them. The magnitude of magnetic field produced at mid-point between the two conductors due to current flowing in them is `300 mu T`. The equal current flowing in the two conductors is:

A

30A in the same direction

B

30A in the opposite direction

C

60A in the opposite direction

D

300A in the opposite direction

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