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Grade: 12
        
WHICH IS THE FORMULA USED IN THIS PROBLEM HERE PLEASE TELL URGENT
8 months ago

Answers : (2)

Mahima Kanawat
622 Points
							Dear student ....The formula used here is the Magnetic field at the centre of circular ring i.e., B=µ0NI/2R.....on solving we get the same answer ....The explanation in the solution is actually the derivation from biot savart law which finally gives B=µ0NI/2R.....With Regards ....Mahima ....(Askiitians Forum Expert )
						
8 months ago
Khimraj
2275 Points
							
Magnetic filed due to current current carrying coil on its axis is given by
 
B = (u0/4π)(2πnIr2/(x+ r2)3/2
here we want to calculate B on centre of circle. SO X =0.
Then B = (u0/2)(nl/r).
By putting given values in above formula you will get answer.
Hope it clears. If you like anser please approve it.
8 months ago
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