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JEE Main 2006 Physics question

PhysicsMoving Charges and MagnetismJEE Main 2006

A long solenoid has 200 turns per cm and carries a current i. The magnetic field at its centre is Weber . Another long solenoid has 100 turns per cm and it carries a current . The value of the magnetic field at its centre is

Answer: (2)

Solution

. $ = 6.28×××

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Question ID VK-038771