Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismBiot-savart's & Ampere's Circuital lawEasy2 minPYQ_2020

PhysicsEasysingle choice

A current-carrying wire of certain length is bent to form an arc that subtends an angle $θ$ at the centre. Let $B$ be the magnetic field at the centre due to this wire. The correct graph between $B$ and $θ$ is

Options:

Answer:

Solution:

$\frac{l}{R} = θ$

$B = \frac{μ_{0} i θ}{2 π (2 R)}$

$B = \frac{μ_{0} i l θ^{2}}{4 π l^{2}}$

$B \propto θ^{2}$

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

⏱ 2mℹ️ Source: PYQ_2020

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