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IIT JEE Advanced 2012 Paper 1

Section: Physics

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Question : 20 of 60

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A cylinder cavity of diameter a exists inside a cylinder of diameter 2a as shown in the figure. Both the cylinder and the cavity are infinity long. A uniform current density J flows along the length. If the magnitude of the magnetic field at the point O is given by

µaJ, then the value of N is _____.

[JEE Adv 2012 P1]

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