Research on the BKE-020 experiment set to determine the electromotive force of a parallel power supply using the curcuit method with two opposite polarity power

Abstract

This paper presents a study on the improvement and design of physics experimental sets, an issue that is always necessary in improving the quality of teaching and learning in high schools. Specifically, we used the BKE-020 experimental set to determine the electromotive force (EMF) of a power source. Then, we designed and improved the experimental set to measure the EMF of parallel-connected power using the circuit method with two opposite polarity power. The results show that this method combined with a sensitive galvanometer and a standard voltage source, allows for accurate measurement of the EMF of parallel connected power sources with very small errors. The value of the research lies in demonstrating the feasibility of verifying theory by experiment, thereby stimulating interest and developing thinking for both students and physics teachers in high schools.