PhysicsEasy116×since 2002Q7687The magnetic field at the centre of a circular coil of radius r, due to current I flowing through it, is B. The magnetic field at a point along the axis at a distance r2{r \over 2}2r from the centre is :AB/2B2BC(25)3B{\left( {{2 \over {\sqrt 5 }}} \right)^3}B(52)3BD(23)3B{\left( {{2 \over {\sqrt 3}}} \right)^3}B(32)3BCheck answerSkip