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Physics - Magnetism Question with Solution | TestHub

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

PhysicsMediumsingle choice

A hairpin like shape as shown in figure is made by bending a long current carrying wire. What is the magnitude of a magnetic field at point $P$ which lies on the centre of the semicircle ?

Options:

Answer:

Solution:

$B = 2 \times B_{st . wire} + B_{loop}$

$B = 2 \times \frac{μ_{0} i}{4 π r} + \frac{μ_{0} i}{2 r} (\frac{π}{2 π})$

$B = \frac{μ_{0} i}{4 π r} (2 + π)$

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

⏱ 2mℹ️ Source: QB

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