At a place the horizontal component of Earth s magnetic

Last updated: 6/13/2023

At a place the horizontal component of Earth s magnetic fields is 50 microtesla A bar magnet of magnetic moment 4 Am is free to rotate about a vertical axis passing through its centre The magnet at rest is released from East West position The kinetic energy acquired by the magnet when it aligns to North South position is O 50 J O 100 J O 200 J O 400 J