---
title: "A point charge \\(q\\) is positioned at the exact center of a solid cube of side length \\(a\\). Which of the following expressions gives the net electric flux through a single square face of the cube?"
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url: "https://nerd-notes.com/ubq/117896/"
date_modified: "2026-08-04T08:02:26+00:00"
---

# A point charge \(q\) is positioned at the exact center of a solid cube of side length \(a\). Which of the following expressions gives the net electric flux through a single square face of the cube?

A point charge \(q\) is positioned at the exact center of a solid cube of side length \(a\). Which of the following expressions gives the net electric flux through a single square face of the cube?

![A three-dimensional line drawing of a cube of side length a drawn in perspective. At the exact geometric center of the cube, a small solid circle represents a positive point charge labeled +q. Thin dashed lines extend from the central charge to the centers of the six faces of the cube to emphasize its central placement. One face of the cube on the right side is lightly shaded to highlight a single face. An arrow labeled a indicates the side length of the cube along one edge. No other labels, lines, text, or axes appear.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1785830546-ymm2dr.jpg)

- **A.** \(\dfrac{q}{\varepsilon_0}\)
- **B.** \(\dfrac{q}{6\varepsilon_0}\)
- **C.** \(\dfrac{q}{24\varepsilon_0}\)
- **D.** \(\dfrac{q}{4\pi\varepsilon_0 a^2}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/117896/*