árammér

Árammér is a Hungarian term that translates to "ammeter" in English. An ammeter is an electrical instrument used to measure the electric current in a circuit. It is typically connected in series with the circuit element through which the current is to be measured. This series connection ensures that all the current flowing through the circuit also flows through the ammeter, allowing for accurate measurement.

Ammeters can be analog or digital. Analog ammeters usually employ a galvanometer, which is a sensitive instrument that detects and indicates the presence and magnitude of small currents. The deflection of a needle on a calibrated scale indicates the current value. Digital ammeters, on the other hand, use electronic circuits to convert the analog current signal into a digital display. These often provide a more precise reading and can be integrated into more complex measurement devices.

The unit of measurement for electric current is the ampere (A). Therefore, ammeters are calibrated to display readings in amperes, or sub-multiples thereof, such as milliamperes (mA) or microamperes (µA). It is crucial to use an ammeter with an appropriate range for the expected current to avoid damaging the instrument. Improper connection, such as connecting an ammeter in parallel, can lead to a short circuit and damage to both the ammeter and the power source.