Post Utme Uniben 2019 Physics Question 38

Practice objective / multiple choice question 38 from the 2019 Post Utme Uniben Physics examination.

Post Utme Uniben 2019 Physics Objective / Multiple Choice
Question 38 POST_UTME_UNIBEN • 2019 • PHYSICS • objective
Post Utme Uniben 2019 Physics Question 38 diagram

A point charge $q$ is placed at the origin of a coordinate system. If a test charge $Q$ is placed at a dis\tance $r$ from the origin, the electric potential at the location of the test charge is given by $V = \frac{1}{4\pi\epsilon_0} \frac{q}{r}$. Which of the following expressions for the electric field $E$ at the location of the test charge is correct?

Answer Options

Correct Answer A. \( E = \frac{1}{4\pi\epsilon_0} \frac{q}{r^2} \)
B. \( E = \frac{1}{4\pi\epsilon_0} \frac{q}{r} \)
C. \( E = \frac{1}{4\pi\epsilon_0} \frac{q^2}{r^2} \)
D. \( E = \frac{1}{4\pi\epsilon_0} \frac{q^2}{r} \)
Correct Answer
A
Correct Option:
\( E = \frac{1}{4\pi\epsilon_0} \frac{q}{r^2} \)

About This Question

This is Post Utme Uniben 2019 Physics Question 38. It is one of the objective questions from the 2019 Post Utme Uniben Physics examination.

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