Question

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 1

Answer: (C)

A permanent magnet at room temperature retains a ferromagnetic property that possesses a dipole moment. And domains are partially aligned due to thermal agitation.