Single Answer MCQ
Q-00019588
What happens to the magnetic field inside a long straight solenoid when there is no current flowing through it?
1
It becomes weak
2
It becomes strong
3
It disappears
4
It circulates
Answer and Solution
Answer
C. It disappears
Solution:
When no current flows through a solenoid, the magnetic field disappears entirely. A magnetic field is produced only when current is present.
Watch Video Solution