Ammeter

Key Stage 3

Meaning

A picture showing an analogue ammeter.

An ammeter is a measuring device used to measure electrical current.

About Ammeters

Ammeters are added in series to a circuit.

An ideal ammeter has zero resistance because otherwise adding an ammeter to a circuit would change the current.

Ammeters can be analogue with a needle pointing to numbers on a dial or it can be digital with a number display.