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MHT CET Physics question

PhysicsMoving Charges and MagnetismMHT CET

A long solenoid has a radius 'a' and number of units per unit length is 'n'. If it carries a current 'i', then the magnitude field on axis is directly proportional to

Answer: (B)

Solution

on the axis of a long solenoid, so and is independent of the

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Question ID VK-078308