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a small circular coil of radius r n no.of turns n is placed at d centre of anoder big circular coil of radius R n no.of turns N. initially d 2 coils r coplanar n d same current i flows thru both coils den d amount of work done in rotating d small coil about any of its diameter by an angle pie vil b ? 3 long wires of resistances in d ratio 3:4:5 r connected in parallel 2 each oder as shown if net force on middl wire is 0 den d1/d2 = ?


a small circular coil of radius r n no.of turns n is placed at d centre of anoder big circular coil of radius R n no.of turns N. initially d 2 coils r coplanar n d same current i flows thru both coils den d amount of work done in rotating d small coil about any of its diameter by an angle pie vil b ? 
 
 
3 long wires of resistances in d ratio 3:4:5  r connected in parallel 2 each oder as shown if net force on middl wire is 0 den d1/d2 = ?


Grade:upto college level

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