An ammeter is an instrument used to measure the flow of electric current in a circuit. It is one of the most common tools in electrical work, helping electricians, students, and engineers understand ...

Potential difference in series circuits Try the experiment online Resistors in series Test your knowledge Resistance ® close resistance (R)How difficult it is for current to flow. increases when ...

Current is a measure of how much electric charge flows through a circuit. The more charge that flows, the bigger the current. Current is measured in amperes. The symbol for ampere is A. For example, ...