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A current i flows upwards along the inner conductor of a coaxial cable and returns down along the external shell .magnetic field at a distance r from the axis of cable inside the shell is ---(ans :μ o I/2πr)

A current i flows upwards along the inner conductor of a coaxial cable and returns down along the external shell .magnetic field at a distance r from the axis of cable inside the shell is ---(ans :μoI/2πr)

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Grade:12

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