Helping students apply superposition principle in problems involving spherical, cylindrical and planar charge distributions

TL;DR

This paper presents a guided inquiry tutorial designed to improve students' understanding of applying the superposition principle with Gauss's law across various charge distributions, showing significant performance improvements.

Contribution

The study introduces a targeted tutorial intervention that enhances student comprehension and application of superposition in electrostatics beyond traditional instruction.

Findings

Students using the tutorial performed significantly better.

Tutorial can be assigned as classwork or homework.

Improved understanding of superposition principle.

Abstract

We describe student difficulties in applying the superposition principle in combination with Gauss's law. We addressed these difficulties by developing a tutorial that uses guided inquiry. Students who used this tutorial following lecture-based instruction performed significantly better on these topics than those who did not. Instructors can assign the tutorial as classwork or homework.