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MHT CET 2025 Physics question

PhysicsMoving Charges and MagnetismMHT CET 2025

A circular coil carrying current has radius 'R'. The distance from the centre of the coil on the axis where the magnetic induction will be th to its value at the centre of the coil is

Answer: (C)

Solution

Field on the axis of a circular coil at distance : ; at the centre . So . Hence $ + =

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Question ID VK-103233