Two conducting hollow spheres are placed one inside the other so they share a common center. The inner sphere has a radius of 10 cm and a charge of +7 microcoulombs; the outer sphere has a radius of 20 cm and a charge of -5 microcoulombs.
What is the magnitude of the electric field at a distance of 30 cm from the center of the spheres?
Next problem : E - A charge on a string.
Previous problem : C - Potential from three charges.
List of problems related to test 1.
Created by Andrew Duffy, Boston University Physics Department.
Last update June 26, 1998