A total charge of 7 * 10^-⁸ C is uniformly distributed throughout a non-conducting sphere with a radius of 5 cm. The electric potential at the surface, relative to the potential far away, is about:

Question

Quizplus · Accepted Answer

The electric potential at the surface of a sphere with a uniformly distributed charge can be found using the equation V = kQ/R, where k is Coulomb's constant, Q is the total charge, and R is the radius of the sphere. Plugging in the given values, we get V = (9x10^9)(7x10^-6)/(0.05) = 1.26x10^5 V. To find the potential relative to far away, we need to subtract the potential at infinity, which is 0. Therefore, the answer is 1.3x10^5 V, or B.

A Total Charge of 7 * 10-8 C Is Uniformly

A Total Charge of 7 * 10^-⁸ C Is Uniformly