So, If I have a permanent magnet can I see that each tiny kingdom(which is called a domain) is aligned in the same direction?
True
False
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In a permanent magnet at room temperature,
(a) The magnetic moment of each molecule is zero (b) The individual molecules have a non-zero magnetic moment which is all perfectly aligned (c) Domains are partially aligned (d) Domains are all perfectly aligned
A bar magnet of magnetic moment 1.5 J T−1 lies aligned with the direction of a uniform magnetic field of 0.22 T.
(a) What is the amount of work required by an external torque to turn the magnet so as to align its magnetic moment: (i) normal to the field direction, (ii) opposite to the field direction?
(b) What is the torque on the magnet in cases (i) and (ii)?