Teaching HTET PGT Level 3 - 2024 Mock Test Physics Moving Charges and Magnetism The Magnetic Dipole Moment
The magnetic field strength of a bar magnet at a point P along its axial line is B. If the distance between the centre of the magnet and point P is halved, the new magnetic field strength at P is B'. find the relation between B and B'.
1
2 B' = B
2
B' = B
3
B' = 4 B
4
B' = 8 B