A very low-current electromagnetic induction experiment enhanced by acoustic means

TL;DR

This paper presents a simple, portable, and low-cost electromagnetic induction experiment enhanced with acoustic means, suitable for educational settings including distance learning.

Contribution

It introduces an innovative setup using smartphones and sound to make electromagnetic induction experiments accessible and engaging for students.

Findings

The setup is safe and low-cost, ideal for educational use.

It effectively demonstrates electromagnetic induction outside traditional labs.

Engages students through multimedia elements like sound and music.

Abstract

We have created a simple, portable, low-cost setup allowing the students and teachers to experiment with and discuss electromagnetic induction in a safe way, using low currents. The simplicity and portability make these activities well suited for experiments outside of the classroom, which is particularly welcome for distance learning. The setup consists of two smartphones used as signal generators, a small coil, two loudspeakers connected to the coil and a third smartphone used as an oscilloscope. We have no doubt that simple, low cost, portable experiments using engaging elements such as smartphones, sound, and music, will be attractive for secondary school and first-year university physics courses.