Lesson: Electric Potential of a Charged SpherePhysics
In this lesson, we will learn how to determine the electric potential around an electrically charged sphere, using symmetries to simplify calculations.
Sample Question Videos
A plastic sphere of radius 0.250 cm, used in a static electricity demonstration, has a uniformly distributed charge of 40.0 pC on its surface. What is the electric potential just outside the sphere’s surface?
A Van de Graaff generator has a metal sphere with a diameter of 2.00 m and a charge of 5.00 mC on it.
What is the potential near its surface?
At what distance from its center is the potential 1.00 MV?
An oxygen atom with eight protons and three missing electrons is released near the Van de Graaff generator. What is the kinetic energy this atom when it is at a distance from the generator for which the potential of the electric field around the generator is 1.00 MV?
A charge of µC is distributed uniformly throughout a spherical volume of radius 18.0 cm. The electric field due to this charge varies with distance from the center of the sphere.
Find the magnitude of the electric field 3.5 cm from the center of the sphere.
Find the magnitude of the electric field 9.0 cm from the center of the sphere.
Find the magnitude of the electric field 21 cm from the center of the sphere.