A bar magnet is placed north-south with its north pole due north. The points of zero magnetic field will be in which direction from the centre of the magnet
North and south
East and west
North-east and south-west
North-west and south-east
Two identical short bar magnets are placed at $120^{\circ}$ as shown in the figure. The magnetic moment of each magnet is $M$. Then the magnetic field at the point $P$ on the angle bisector is given by
The earth’s magnetic field at the equator is approximately $0.4 \;G$. Estimate the earth’s dipole moment.
What does the analog (similarity) of bar magnet’s and solenoid’s magnetic field lines suggest ?
If a hole is made at the centre of a bar magnet, then its magnetic moment will
Define pole strength of magnet. and Write the unit of pole strength of magnet