Target Exam

CUET

Subject

Physics

Chapter

Electrostatic Potential and Capacitance

Question:

In the figure, an a-particle moves a distance $l$ in a uniform electric field $\vec E$ as shown. Does the Electric Field do a positive or a negative work on the a-particle? Does the electric potential energy of the a-particle increase or decrease?

Options:

Negative, increases

Positive, decreases

Negative, decreases

Positive, increases

Correct Answer:

Positive, increases

Explanation:

The correct answer is Option (4) → Positive, increases

As α-particle is moving away from electric field. Thus, the work done is positive.

and, the potential energy increases.