Electric Potential

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Potential at distance r from point charge q (zero at infinity) is:

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k q / r

k q r

$k q / r^{2}$

k / (q r)

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Subject: physics
Chapter: electrostatics
Topic: electric potential
Difficulty: Easy
Year: 2025

Solution

Correct Answer:

k q / r

Electric Potential ( $V$ ) at a point is the work done per unit charge in bringing a positive test charge from infinity to that point.

For a point charge $q$ at distance $r$ : $V = \frac{k q}{r} = \frac{1}{4 π ϵ _{0}} \frac{q}{r}$
Note: $V$ is a scalar quantity. It depends on the sign of $q$ .

This easy difficulty physics question is from the chapter electrostatics, covering the topic of electric potential. It appeared in the 2025 exam.

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Electric Potential

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