Question

In the figure, a proton moves a distance `d` in a unform electric `vecE` as shown in the figure. Does the electric field do a positive or negative work on the proton? Does the electric potential energy of the proton increase or decrease?

A. Negative, increase
B. Positive, decrease
C. Negative, decrease
D. Positive, increase

Answer 1

Correct Answer - A
Since, the proton is moving against the direction of eelctric field, so work is done by the proton against electric field. Implies that eleectric field does negative work on the proton.
Again, proton is moving in electric field from low potential region to high potential region hence, its potential eenrgy increases.