1 Electromagnetic Induction
A wire of length ‘ l’ is bent in to a circular coil of one turn of radius R1 . Another wire of the same material and same area of cross section and same length is bent in to a circular coil of two turns of radius R2. . When the same current flows through the two coils, the ratio of magnetic induction at the
1) 1 : 2 2) 1 : 1 3) 1 : 4 4) 3 : 1
SOLUTION
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