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MHT CET202410 May 2024Morning ShiftPhysicsMagnetic Effects of CurrentActual

A circular arc of radius r carrying current ' I ' subtends an angle 8 at its entre. The radius of a metal wire is uniform. The magnetic induction at the centre of circular arc is ( ₀= permeability of free space)

Options

A₀ I 8 r
B₀ I 32 r
C₀ I 64 r
D₀ I 16 r

Correct answer

B. ₀ I 32 r

Step-by-step solution

The magnetic induction at the centre of circular arc is B= ₀ I 4 r B= ₀ I 4 r 8 [ = 8 ] B= ₀ I 32 r

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