A Simple Experiment to Visualize Electromagnetic Induction and study Faraday's Law and Magnetic Pole Strength using a Voltage Sensor

Purpose of this paper is to design an experiment to make quantitative measurements of the induced emf including visual displays of electromagnetic induction and study Faraday's Law and Magnetic Pole Strength using a Voltage Sensor. This study focusses on the detail features of the visual display of the induced emf including peak values and magnetic fluxes by the individual poles of magnets. In addition, the experimental procedures are simple, straightforward, and undergraduate-student friendly. Experiment is conducted using readily available equipment in a typical undergraduate physics laboratory where students are exposed to computer-based data collection and analysis. This is accomplished by means of a voltage sensor connected to a solenoid and the induced emf is observed in the computer display when a permanent magnet is moved through the solenoid. In this work both bar and horseshoe magnets are employed to induce electricity. Observations are explained using Faraday's law of induction and results show that the strength of the poles of a magnet are equal.