6. Electricity and Magnetism

Electric Potential — Quiz

Test your understanding of electric potential with 5 practice questions.

Practice Questions

Question 1

A spherical conductor of radius $R$ has a total charge $Q$ uniformly distributed on its surface. What is the electric potential at a point inside the conductor at a distance $r < R$ from its center?

Question 2

Two parallel plates are separated by a distance $d$ and have a potential difference of $V$ between them. If an electron is released from rest at the negative plate, what is its kinetic energy when it reaches the positive plate?

Question 3

An electric dipole consists of two charges, $+q$ and $-q$, separated by a distance $2a$. What is the electric potential at a point on the perpendicular bisector of the dipole, at a distance $r$ from the center of the dipole?

Question 4

If the electric potential in a region is given by $V(x) = Ax^2 - Bx$, where $A$ and $B$ are positive constants, what is the magnitude of the electric field at $x = 0$?

Question 5

A hollow conducting sphere has a net positive charge. Which of the following statements about the electric potential and electric field inside the hollow space is true?