A short bar magnet of magnetic moment 0.4

Asked by admin @ 26/08/2021 in Physics viewed by 327 People

A short bar magnet of magnetic moment 0.4J 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) –0.064 J(b) zero(c) –0.082 J(d) 0.064 J

Answered by admin @ 26/08/2021

given,

magnetic moment, μ= 0.4 J/T

magnetic field, B= 0.16 T

U=-μ•B

=-μBcosx

where x is angle between μ And B

for x=0°

the dipole is in stable equilibrium

thus..

U=-μBcos0°

U=-μB

U=-0.4×0.16

U=-0.064 J

your answer is (a)

A short bar magnet passes at a steady speed

Asked by admin @ 20/08/2021 in Physics viewed by 329 persons

A short bar magnet passes at a steady speed right through a long solenoid. A galvanometer isconnected across the solenoid. Which graph bestrepresents the variation of the galvanometer …

A bar magnet of magnetic moment m is placed

Asked by admin @ 23/08/2021 in Science viewed by 308 persons

A bar magnet of magnetic moment M is placed at right angles to a magnetic induction B.

A bar magnet of magnetic moment m is aligned

Asked by admin @ 23/08/2021 in Physics viewed by 257 persons

A bar magnet of magnetic moment M is aligned parallel to the direction of a uniform field B. What is the work done to turn the magnet, so as to …

Two identical short bar magnets are placed at 120

Asked by admin @ 20/08/2021 in Physics viewed by 369 persons

Two identical short bar magnets are placed at 120° as shown in the figure. The magnetic moment of each magnet is M. Then the magnetic field at the point P …

Two identical bar magnets each of magnetic moment m

Asked by admin @ 20/08/2021 in Physics viewed by 388 persons

Two identical bar magnets each of magnetic moment M are placed as shown in figure. Magnetic field at point P is the correct answer is option (1) plz explain how

The magnetic moment of a diamagnetic atom is

Asked by admin @ 29/08/2021 in Physics viewed by 261 persons

The magnetic moment of a diamagnetic atom is (a) equal to zero (b) much greater than one (c) 1 (d) between zero and one

Write si unit and dimension of magnetic moment

Asked by admin @ 24/08/2021 in Physics viewed by 364 persons

Write SI unit and dimension of magnetic moment ?

Define the term magnetic moment of a current loop

Asked by admin @ 23/08/2021 in Physics viewed by 347 persons

Define the term: magnetic dipole moment of a current loop. write the expression for the magnetic moment when an electron revolves at a speed ‘v', around an orbit of radius …

The sum of 0.3 bar and 0.4 bar is

Asked by admin @ 13/08/2021 in Math viewed by 314 persons

Write the sum of 0.3 bar and 0.4 bar

Magnetic dipole moment is a vector quantity directed from

Asked by admin @ 12/08/2021 in Physics viewed by 299 persons

Magnetic dipole is a vector quantity directed from

Magnetic moment of an electron orbiting in a circular orbit

Asked by admin @ 04/08/2021 in Physics viewed by 268 persons

The magnitude of magnetic moment of an electron orbiting in a circular orbit og radius r with a speed v Is equal to

What type of magnetism is present in a bar magnet

Asked by maham237 @ 24/07/2021 in Physics viewed by 254 persons

A. Superconducting B. Contact C. Induced D. Permanent

Two bar magnets of the same mass same length

Asked by admin @ 23/08/2021 in Physics viewed by 296 persons

Two bar magnets of the same mass, same length and breadth but having magnetic moments M and 2M are joined together pole for pole and suspended by a string. The …

Two small bar magnets are placed in a line

Asked by admin @ 17/08/2021 in Physics viewed by 371 persons

Two small bar magnets are placed in a line at certain distance d apart. If the length of each magnet is negligible compared to d , the force between them …