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JEE Main 27 June 2022 Shift 2 Solved Paper

Section: Physics
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Question : 56 of 90
 
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The current density in a cylindrical wire of radius r=4.0‌mm is 1.0×106A∕m2. The current through the outer portion of the wire between radial distances ‌
r
2
 and r is xπA; where x is____
[27-Jun-2022-Shift-2]
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