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Solution


Q.

The north pole of a long bar magnet was pushed slowly into a short solenoid connected to a galvanometer. The magnet was held stationary for a few seconds with the North pole in the middle of the solenoid and then withdrawn rapidly. The maximum deflection of the galvanometer was observed when the magnet was:
1 Moving towards the solenoid  
2 Moving into the solenoid  
3 At rest inside the solenoid  
4 Moving out of the solenoid  

Ans.

(4)

As due to electromagnetic induction.