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Two long parallel conductors carry curre...

Two long parallel conductors carry currents in opposite directions as shown. One conductor carries a current of 10 A and the distance between the wires is d = 10 cm. Current I is adjusted, so that the magnetic field at P is zero. P is at a distance of 5 cm to the right of the 10 A current. Value of I is :

A

40 A

B

30 A

C

20 A

D

0.41666666666667

Text Solution

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The correct Answer is:
B
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