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(a) Explain with the help of a diagram the distribution of magnetic field due to a current through a circular loop. Why is it that if a
current carrying coil has n turns, the magnetic field produced at any point is n times as large as that produced by a single turn ?
(b) What does the direction of thumb indicate in the right hand thumb rule ? In what way is this rule different from the Fleming’s left
hand rule ?

 

 

 

 
 
 
 
 

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