Q. 3

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 :

In a room temperature, a permanent magnet acts as a ferromagnetic material whose domains are aligned in the same direction. Domain is an aspect of ferromagnetic materials in which the electrons have same magnetic orientation. After keeping the permanent magnet in a room temperature for a long time individual atoms align themselves in same direction and due to same magnetic orientation, it forms a dipole, which has a working north and south pole. Some examples of room temperature, ferromagnetic material that can change to permanent magnet are iron, nickel, cobalt and gadolinium.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Interactive Quiz on Magnetic field due to straight wire & circular loopFREE Class
Magnetic force on moving charge particle in magnetic field44 mins
Magnetic field due to current carrying straight wireFREE Class
Magnetic field due to current carrying circular loopFREE Class
Know about Internal Resistance & EMF42 mins
Questions based on Kirchoff's Law for Voltage67 mins
10 Good Problems on Current Electricity41 mins
Kirchoff's Law for VoltageFREE Class
Kirchoff's current & Voltage lawFREE Class
Quick Revision of Current Electricity68 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses