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MHT CET Physics question

PhysicsMoving Charges and MagnetismMHT CET

There are 50 turns of a wire in every cm length of a long solenoid. If 4 ampere current is flowing in the solenoid, the approximate value of magnetic field along its axis at an internal point and at one end will be respectively [MP PET 1996]

Answer: (C)

Solution

, so inside Wb/m and at an end

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Question ID VK-078694