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 ...

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, ...

The simplest complete circuit is a piece of wire from one end of a battery to the other. An electric current can flow in the wire from one end of the battery to the other, but nothing useful happens.

Abstract: Ammeters are always connected in series in the branch where a current is measured. Unfortunately, parallel connection can destroy a meter if connected by mistake, as often happens in ...