Magnetic effect of electric current

Dear Student ,
A/c to  Lenz Law : the current is established in the loop in such a way that it opposes the change in the magnetic field .
So , when the north pole come closer the loop the loop will face increasing inwards magnetic field , hence the current established in the loop in such a way that magnetic field produced due to it will be in outwards direction . So , current will be in anticlockwise 
​​or from B to A so galvanometer will show left deflection .
Since both are moving in same direction with same speed , the magnet​​ic field will not change . So there will not be any current in circuit
SO ,the galavanometer will show zero deflection .

Hope it helps , keep Posting !!

Regards​
​​​​​

  • 0
What are you looking for?