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A current of 2 amp. flows in a long, str...

A current of 2 amp. flows in a long, straight wire of radius `2 mm`. The intensity of magnetic field on the axis of the wire is

A

`((mu_(0))/(pi))xx10^(3)` Tesla

B

`((mu_(0))/(2pi))xx10^(3)` Tesla

C

`((2mu_(0))/(pi))xx10^(3)` Tesla

D

Zero

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • 20 ampere current is flowing in a long straight wire. The intensity of magnetic field at a distance 10 cm from the wire will be

    A
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