Development of sensor-based learning tool for the study induction magnetic force for high school students

Abstract

Important fundamental concepts in magnetostatics are the magnetic field and the magnetic force. However, students often experience misconceptions about these concepts because of differences in their understanding and interpretation. In this study, a learning tool is designed to demonstrate the inductive magnetic force to objects due to an induced magnetic field. This learning tool is an integrated system consisting of a magnetic sensor, an Arduino microcontroller, and an electric coil. To demonstrate the magnetic force, an object of mini cylindrical metal is inserted into a straw that is placed in the electric coil. The experimental data show a positive correlation between the object displacement with magnetic field strength, as well as magnetic fields to the electric currents in the coil. This toolkit may be used as a magnetostatic learning tool for students in high schools.