Question

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 1

The Correct Option is A

 

 

Step 1: Use Lenz’s Law 

According to Lenz’s law, the induced current always flows in a direction such that it opposes the change in magnetic flux that causes it.

Step 2: Analyze Solenoid-1

As the bar magnet approaches solenoid-1, the magnetic flux increases. To oppose this increase, solenoid-1 generates a magnetic field opposite to the bar magnet’s field, inducing a current in the direction AB.

Step 3: Analyze Solenoid-2

For solenoid-2, the magnetic field due to the approaching bar magnet increases in the direction towards solenoid-1. To oppose this, solenoid-2 generates a magnetic field pointing away, inducing a current in the direction DC.