Measuring the voltage in a circuit is like measuring the drop in pressure across two points. Learn more with this tutorial.

This lab is designed to have students investigate the relationships between voltage, resistance and current in a circuit with only one passive component. This version of the lab requires students to read analog meters to get the voltage...

A short summary of resistance and how it is measured. Including information on AC and DC.

At this site from Georgia State University parallel and series connections of resistors are explained and illustrated. Equations for computing the overal voltage, current, and resistance of such circuits are given and explained.

Explains and illustrates the meaning of series connections. Discusses the voltage-current-resistance relationships for series connections of resistors. An example problem on series calculations can be accessed from this page.

Find out about the German physicist and mathematician whose work in the field of electrical current shaped the study of electricity.

A discussion of various principles related to voltage. The operation of battery testers and voltmeters are explained. The importance of the internal resistance of a power source is discussed.

Students investigate circuits and their components by building a basic thermostat. They learn why key parts are necessary for the circuit to function, and alter the circuit to optimize the thermostat temperature range. They also gain an...

Georg Simon Ohm had humble roots and struggled financially throughout most of his life, but the German physicist is well known today for his formulation of a law, termed Ohm's law, describing the mathematical relationship between...