Question

The intensity of magnetic induction at the centre of a current `-` carrying circular coil is `B_(1)` and at a point on its axis at a distance equal to its radius from the centre is `B_(2)` , then `B_(1)//B_(2)` is
A. `2sqrt(2)`
B. `(1)/(2sqrt(2))`
C. `(1)/(sqrt(2))`
D. `sqrt(2)`

Answer 1

Correct Answer - 1
`B=(mu_(0)n ir^(2))/(2(x^(2)+x^(2))^((3)/(2)))`