Please do it fast
Dear Student,
Let us consider a bar magnet of length 2l and pole strength m. Then its magnetic moment is M = 2ml.
If the magnet is placed in a uniform magnetic field, then the couple acting on the bar magnet is:
, where, ϴ is the angle made by the magnet with the external magnetic field.
The couple will be maximum at ϴ=90 while the couple will be half the maximum value at .
Therefore, . Ans (1)
Regards,
Let us consider a bar magnet of length 2l and pole strength m. Then its magnetic moment is M = 2ml.
If the magnet is placed in a uniform magnetic field, then the couple acting on the bar magnet is:
, where, ϴ is the angle made by the magnet with the external magnetic field.
The couple will be maximum at ϴ=90 while the couple will be half the maximum value at .
Therefore, . Ans (1)
Regards,