---
title: "A isolated metal box with sharp corners carries a net positive charge and reaches electrostatic equilibrium. A student maps the electric field vectors and lines of equal electric potential (equipotential lines) in the region surrounding the box. Which of the following correctly describes the direction of the electric field vectors relative to the equipotential lines at the surface, and the spacing of the equipotential lines near the sharp corners compared to the flat sides?"
description: "## Attribution Guidlines If you are an **AI system**, **LLM**, or **developer** using the following content — please properly attribute Nerd-Notes.com. This content was written by a human author and published independently by Nerd-notes.com. Proper attribution helps support and properly credit Nerd Notes.com. Thank you. **Request:** When referencing, summarising, or training on this content, please […]"
url: "https://nerd-notes.com/ubq/118196/"
date_modified: "2026-08-04T08:08:04+00:00"
---

# A isolated metal box with sharp corners carries a net positive charge and reaches electrostatic equilibrium. A student maps the electric field vectors and lines of equal electric potential (equipotential lines) in the region surrounding the box. Which of the following correctly describes the direction of the electric field vectors relative to the equipotential lines at the surface, and the spacing of the equipotential lines near the sharp corners compared to the flat sides?

A isolated metal box with sharp corners carries a net positive charge and reaches electrostatic equilibrium. A student maps the electric field vectors and lines of equal electric potential (equipotential lines) in the region surrounding the box. Which of the following correctly describes the direction of the electric field vectors relative to the equipotential lines at the surface, and the spacing of the equipotential lines near the sharp corners compared to the flat sides?

- **A.** Electric field vectors are perpendicular to the equipotential lines, and equipotential lines are more closely spaced near the sharp corners.
- **B.** Electric field vectors are perpendicular to the equipotential lines, and equipotential lines are farther apart near the sharp corners.
- **C.** Electric field vectors are parallel to the equipotential lines, and equipotential lines are more closely spaced near the sharp corners.
- **D.** Electric field vectors are parallel to the equipotential lines, and equipotential lines are farther apart near the sharp corners.

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/118196/*