Question

A charge q is equal to 10 microcoulomb is distributed uniformly over the circumference of a ring of radius 3 metre

Answer 1

bro whenever charge is given to a ring or something like material then each time it's charge will be concentrate over its surface and if you want value of E=kqq/r^2 .9x10^9x10x10^-5 x10x10^-5 // 9pls mark as brainlist