Question

Una esfera no conductora de 21cm de radio tiene una carga distribuida uniformemente en todo su volumen. ¿Cuál es la carga total de la esfera si el campo eléctrico a 10cm del centro de la esfera es de 790N/C? Responde en nC y con dos decimales.

Answer 1

Given the radius of the non-conducting sphere is R = 21cm and the electric field at a distance r = 10cm from the centre of the sphere is E = 790N/C. Let the total charge of the sphere be Q. The electric field inside a non-conducting sphere at a distance r from the centre of the sphere having radius R is given by,

So the charge on the sphere is 8.13nC.