Back to Electric Field — Problem 7 · Task Set 5

Exercises: Electric Field

Work through each section in order. Use $k = 9 \times 10^9$ N·m²/C² throughout. Show your work on calculation problems.

Grade 11·22 problems·~35 min·OpenStax Physics (High School)·section·sec-18-3

Work through problems with immediate feedback

Fluency Practice

Use $k = 9 \times 10^9$ N·m²/C². Show your work on calculation problems.

Diagram of a uniform electric field pointing right with a proton and electron placed in it, showing unknown force directions on each

A uniform electric field points in the $+x$ direction. A proton (charge $+e$ ) and an electron (charge $-e$ ) are both placed in this field. What is the direction of the force on the electron?

In the $+x$ direction (same as $E$ )

In the $-x$ direction (opposite to $E$ )

No force — the electron is neutral.

Perpendicular to the field.