An electron (charge -1.6 *10 ^- ¹⁹C) moves on a path perpendicular to the direction of a uniform electric field of strength 3.0 N/C. How much work is done on the electron as it moves 20 cm?

Question

Quizplus · Accepted Answer

Work done by an electric field on a charge is given by W = qEd cos(θ), where θ is the angle between the field and the path. Since the electron moves perpendicular to the electric field, θ = 90°, and cos(90°) = 0, so the work done is zero.

An Electron (Charge -1