Description
An ammeter (from Ampere Meter) is a measuring instrument used to measure the current in a circuit. Electric
currents are measured in amperes (A), hence the name. Instruments used to measure smaller currents, in the
milliampere or microampere range, are designated as milliammeters or microammeters. Early ammeters were
laboratory instruments which relied on the Earth’s magnetic field for operation. By the late 19th century, improved
instruments were designed which could be mounted in any position and allowed accurate measurements in electric
power systems.
Reviews
There are no reviews yet.