Solid State Question 80
Question: A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field because
Options:
A) all the domains get oriented in the direction of magnetic field
B) all the domains get oriented in the direction opposite to the direction of magnetic field
C) domains get oriented randomly
D) domains are not affected by magnetic field
Show Answer
Answer:
Correct Answer: A
Solution:
[a] In the presence of magnetic field, all the domains of a ferromagnetic substance get oriented in the direction of magnetic field. That’s why it becomes a permanent magnet.
BETA
