What is a DC Ammeter?

A DC ammeter is an instrument used to measure electric current flowing in a circuit, specifically direct current (DC). It is designed to measure the flow of electric charge in one direction only. The ammeter is typically connected in series with the circuit under measurement, meaning that the current flows through the meter itself.

DC ammeters usually have a low resistance to minimize their impact on the circuit being measured. They are calibrated to display readings in units such as amperes (A) or milliamperes (mA), depending on the range of current being measured.

Modern DC ammeters can come in analog or digital forms. Analog ammeters have a needle that moves across a scale to indicate the current, while digital ammeters display the current value numerically on a digital screen. Both types provide accurate measurements of DC current flow.