7. Electricity and Magnetism

Electric Fields — Quiz

Test your understanding of electric fields with 5 practice questions.

Practice Questions

Question 1

What is the electric field at a point on the perpendicular bisector of two equal positive point charges $+Q$ separated by a distance $2d$?

Question 2

A point charge $Q$ is placed at the origin. What is the electric field at a point $(x, y)$ in Cartesian coordinates?

Question 3

What is the net electric field at the center of a uniformly charged semicircular arc of radius $R$ with total charge $Q$?

Question 4

Two point charges $+Q$ and $-Q$ are placed at $(0, -d)$ and $(0, +d)$, respectively. What is the direction of the electric field at the origin $(0, 0)$?

Question 5

A long uniformly charged line with linear charge density $\lambda$ creates an electric field at a distance $r$ from it. What is the magnitude of the electric field?