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Two wires with currents 2A and 1A are en...

Two wires with currents 2A and 1A are enclosed in a circular loop. Another wire with current 3 A is situated outside the loop as shown. The `ointveB.dvecI` around the loop is

A

`mu_(0)`

B

`3mu_(0)`

C

`6mu_(0)`

D

`2mu_(0)`

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