What happens to the deflection when we add salt to an electrolyte? Watch this visual demonstration to answer this question.

A video showing the construction of an electrical circuit. Understand the components that are needed to make electricity flow as LED light is powered. [1:30]

A video demonstration showing how to construct a series circuit with batteries, a light bulb, and wire. [1:18]

A video illustrates the basic function of a battery to allow us the convenience to run small electronics and appliances without an electric cord plugged into a wall. [2:15]

Simple device which we can use to measure our homemade batteries. You can test it with any household battery first. What does this deflection represent? What forces are involved? [0:49]