Solve Study Textbooks Guides

Use app

Login

>>Class 12
>>Physics
>>Moving Charges and Magnetism
>>Torque on a Rectangular Current Loop and Problems on it
>> $When a current carrying coil is placed i$

Question

When a current carrying coil is placed in a uniform magnetic field with its magnetic moment anti-parallel to the field

This question has multiple correct options

A

torque on it is maximum

B

torque on it is zero

C

potential energy is maximum

D

dipole is in unstable equilibrium

Medium

Open in App

Updated on : 2022-09-05

Solution

Verified by Toppr

Correct options are B) , C) and D)

Given, $M ∦ B$ , It is anti parallel.
$∴ M \times B = 0$ since angle is $18 0^{\circ}$
Potential energy $U = - M . B = - M B cos 18 0^{\circ} = M B \times 1 = M B$
Potential energy is maximum is an equilibrium but is an unstable equilibrium.

Solve any question of Moving Charges and Magnetism with:-

Patterns of problems

Was this answer helpful?

0

0

Similar questions

If a solenoid of magnetic moment $0.2 A m^{2}$ in a uniform magnetic field $0.16$ T experiences a torque $0.016$ Nm, then angle made by a solenoid axis with magnetic field is _____________.

A small ball of volume $V$ made of paramagnetic with susceptibility $X$ was slowly displaced along the axis of a current-carrying coil from the point where the magnetic induction equals $B$ out to the region where the magnetic field is practically absent. What amount of work was performed during this process?

A short bar magnet of magnetic moment $0.4 J T^{1}$ is placed in a uniform magnetic field of 0.16 T. The magnet is in stable equilibrium when the potential energy is

A magnetic needle is placed in a uniform magnetic field and is aligned with the field. The needle is now rotated by an angle of $6 0^{\circ}$ and the work done is W. The torque on the magnetic needle at this position is:

Two magnets of magnetic moments $M$ and $3 M$ are joined to form a cross $(+)$ . The combination is suspended freely in a uniform magnetic field. In equilibrium position the angle between the magnetic moment M and the field is:

More From Chapter

Moving Charges and Magnetism

View chapter >

Revise with Concepts

Torque on Current Carrying Loop

ExampleDefinitionsFormulaes

Learn with Videos

Problem based on current carrying loop performing SHM

Practice more questions

Medium Questions

Shortcuts & Tips

Problem solving tips

Common Misconceptions

Important Diagrams

Memorization tricks