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Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismBiot-savart's & Ampere's Circuital lawMedium2 minQB

PhysicsMediumsingle choice

A current $I$ flows through a thin wire shaped as regular polygon of $n$ sides which can be inscribed in a circle of radius $R$ . The magnetic field induction at the centre of polygon due to one side of the polygon is

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Answer:

Solution:

$B = \frac{μ _{0} I}{4 π r} (2 sin \frac{π}{n})$

$r = R cos \frac{π}{n}$

$B = \frac{μ _{0} I}{2 π R} tan \frac{π}{n}$

Stream:JEESubject:PhysicsTopic:MagnetismSubtopic:Biot-savart's & Ampere's Circuital law

⏱ 2mℹ️ Source: QB

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