3. Electricity and Magnetism

Electric Potential — Quiz

Test your understanding of electric potential with 5 practice questions.

Practice Questions

Question 1

A point charge of $4 \, \mu C$ is placed at the origin. What is the electric potential at a point located $0.6 \, m$ from the charge? (Assume $k = 8.99 \times 10^9 \, N \cdot m^2 / C^2$)

Question 2

Two point charges, $+5 \, \mu C$ and $-5 \, \mu C$, are placed $0.8 \, m$ apart. What is the electric potential at a point on the line between them, $0.2 \, m$ from the $+5 \, \mu C$ charge? (Assume $k = 8.99 \times 10^9 \, N \cdot m^2 / C^2$)

Question 3

What is the electric potential energy of a $3 \, \mu C$ charge placed in an electric potential of $40 \, V$?

Question 4

A uniform electric field has a magnitude of $300 \, V/m$. If the potential at $x = 0 \, m$ is $100 \, V$, what is the electric potential at $x = 0.4 \, m$ in the direction of the field?

Question 5

A point charge of $-6 \, \mu C$ is placed at the origin. What is the electric potential at a point located $0.5 \, m$ away from the charge? (Assume $k = 8.99 \times 10^9 \, N \cdot m^2 / C^2$)