Two circular loop of radii 10cm and 40cm carries current of 1A and 2A respectively. Find the ratio of magnitude of magnetic field at their centres

Asked by ayushmishradbb | 5th Nov, 2019, 05:49: PM

Expert Answer:

M a g n e t i c space f i e l d space a t space t h e space c e n t r e space o f space t h e space l o o p equals fraction numerator mu subscript 0 I over denominator 2 R end fraction
B subscript 1 over B subscript 2 equals fraction numerator fraction numerator mu subscript 0 I subscript 1 over denominator 2 R subscript 1 end fraction over denominator fraction numerator mu subscript 0 I subscript 2 over denominator 2 R subscript 2 end fraction end fraction

B subscript 1 over B subscript 2 equals I subscript 1 over I subscript 2 cross times R subscript 2 over R subscript 1
B subscript 1 over B subscript 2 equals 1 half cross times fraction numerator 40 cross times 10 to the power of negative 2 end exponent over denominator 10 cross times 10 to the power of negative 2 end exponent end fraction
B subscript 1 over B subscript 2 equals 2 over 1

Answered by Utkarsh Lokhande | 5th Nov, 2019, 06:53: PM