Answer to Question #308103 in Electric Circuits for chan

Question

Find the value of the electric field at a distance r=10 cm from the center of a non-conducting sphere of radius R=1 cm which has an extra positive charge equal to 7 C uniformly distributed within the volume of the sphere.

Answer 1

Answer

• Consider the sphere as a point charge and apply Coulomb's law for a distance of 0.1 m from the centre.
• It is the extra charge that charges up the sphere. So the charge is +7 C.