volttail8451 volttail8451

26-04-2024
Physics

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A current of one ampere is passed through a straight wire of length 2 metre. The magnetic field at a point in air at a distance of 3 m from one end of the wire but lying on the axis of the wire will be:
A. μ0/8π
B. μ0/2π
C. μ0/4π
D. Zero

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