6. Electricity and Magnetism

Electric Field — Quiz

Test your understanding of electric field with 5 practice questions.

Practice Questions

Question 1

A solid conducting sphere of radius $R$ has a total charge $Q$ uniformly distributed on its surface. What is the magnitude of the electric field inside the sphere ($r < R$)?

Question 2

Two point charges, $Q_1 = +2 \text{ nC}$ and $Q_2 = -4 \text{ nC}$, are separated by a distance of $0.1 \text{ m}$. What is the magnitude of the electric field at the point exactly midway between the two charges?

Question 3

An infinitely long line of charge has a uniform linear charge density of $\lambda$. What is the magnitude of the electric field at a perpendicular distance $r$ from the line of charge?

Question 4

A uniformly charged non-conducting sphere of radius $R$ has a total charge $Q$ distributed throughout its volume. What is the magnitude of the electric field at a point inside the sphere ($r < R$)?

Question 5

Consider a square with point charges at each corner. If three corners have charges of $+Q$, and one corner has a charge of $-Q$, what is the direction of the net electric field at the center of the square?