Question
Physics Question on Solenoids and Toroids
In the above diagram, a strong bar magnet is moving towards solenoid-2 from solenoid-1. The direction of induced current in solenoid-1 and that in solenoid-2, respectively, are through the directions :
A
AB and DC
B
BA and CD
C
AB and CD
D
BA and DC
Answer
AB and DC
Explanation
Solution
Using Lenz’s law:
- In solenoid-1, induced current opposes the motion of the magnet, flowing AB.
- In solenoid-2, induced current supports the approach of the magnet, flowing DC.