Question
Physics Question on Magnetic properties of materials
In a permanent magnet at room temperature
A
Magnetic moment of each molecule is zero
B
The individual molecules have non-zero magnetic moment which are all perfectly aligned
C
Domains are partially aligned
D
Domains are all perfectly aligned
Answer
Domains are partially aligned
Explanation
Solution
At room temperature, a permanent magnet maintains its ferromagnetic characteristics, exhibiting a dipole moment. Thermal agitation causes partial alignment of domains within the magnet.