Start Free Mock LoginAlready registered? Login here

Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismMagnetic Dipole & MomentEasy2 minPYQ_2020

PhysicsEasysingle choice

The wire of length $l$ is bent into a circular loop of a single turn and is suspended in a magnetic field of induction $B$ . When a current $I$ is passed through the loop, the maximum torque experienced by it is

Options:

Answer:

Solution:

When the wire of length $l$ is bent into circular loop of radius $R$

$l = 2 π r \Rightarrow r = \frac{l}{2 π}$

When current $I$ is passed through the loop, the torque acting on the loop.

$τ = n I A B$

$τ = I \times B \times π r^{2}$

$= I B π {(\frac{l}{2 π})}^{2} = I B \frac{l^{2}}{4 π} = (\frac{1}{4 π}) B I l^{2}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:MagnetismSubtopic:Magnetic Dipole & Moment

⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...