question

(a) define the term ‘self inductance’ of a coil. write its s.i. unit.

(b)  a rectangular loop of sides a and b carrying current is kept at a distance ‘a’ from an infinitely long straight wire carrying  current  as shown in the figure. obtain an expression for the resultant force acting on the loop.

        

 

 

 

 

 

 

 

 

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