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shailja priya Grade: 12
        find the expression for magnetic field induction at the centre of a coil bent in form of a square of side 2a carrying current I.
8 years ago

Answers : (1)

Pratham Ashish
17 Points
										

 hi,


for magnetic field induction at the centre of  coil


the induction due to the parallel sides will add up instead of being cancelled in this case


& induction by all the four sides will be in the same direction either up the plane (  for anticlockwise current flow)  otherwise below the plane 


B = 4 *(  µ./4¶) ( i/ a)(sin Ø1+ sin Ø2)


since Ø = sin Ø 2 =  sin 45 


    =  4 *(  µ./4¶) ( i/ a)( 2 / 2 1/2 )


4 * ( 2^ 1/2) *(  µ./4¶) ( i/ a)


 



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8 years ago
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