MHT CET 2024 Physics question

Physics Moving Charges and Magnetism MHT CET 2024

A current 'I' flows in anticlockwise direction in a circular arc of a wire having of circumference of a circle of radius R. The magnetic field 'B' at the centre of circle is ( = permeability of free space)

(A) in upward direction
(B) in downward direction
(C) in downward directionCorrect
(D) in upward direction

Answer: (C)

Solution

A full circular loop carrying current produces at its centre, and the field is proportional to the length (angle) of the arc. For an arc that is of the circumference (angle ): \dfrac{μ_0 I}{4π R}\dfrac{3π}{2}$ =

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Question ID VK-099653