cylinder with inner radius | Physics | JEE Advanced 2012

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JEE Advance 2012

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Question

An infinitely long hollow conducting cylinder with inner radius $R / 2$ and outer radius $R$ carries a uniform current density along is length. The magnitude of the magnetic field, $|\overrightarrow{\mathrm{B}}|$ as a function of the radial distance r from the axis is best represented by :

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A

B

C

D

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