Making and Evaluating an Electrical Battery

摘要

This paper describes an experiment that can be used to introduce the operation and working parameters of a battery to either high school or college students. The experiment shows students how to use a simple cell to light an LED and how to measure current, voltage, and power when they are changing with time. The experiment can be extended to show how effective electrode area controls the current and voltage, and how to measure the internal resistance of the battery.