AskDefine | Define electrometer

Dictionary Definition

electrometer n : meter to measure electrostatic voltage differences; draws no current from the source

User Contributed Dictionary

English

Noun

  1. A device used to detect and measure static electricity; an electroscope
  2. A precision voltmeter that draws almose no current from the circuit

Extensive Definition

An electrometer is an electrical instrument for measuring electric charge or electrical potential difference. There are many different types, ranging from historical hand-made mechanical instruments to high-precision electronic devices. Modern electrometers based on vacuum tube or solid state technology can be used to make voltage and charge measurements with very low leakage currents, down to 1 femtoampere. A simpler but related instrument, the electroscope, works on similar principles but only indicates the relative magnitudes of voltages or charges.

Simple charge indicating device

External links

electrometer in Belarusian: Электраскоп
electrometer in Czech: Elektroskop
electrometer in German: Elektroskop
electrometer in Estonian: Elektromeeter
electrometer in Spanish: Electroscopio
electrometer in French: Électromètre
electrometer in Indonesian: Elektrometer
electrometer in Lithuanian: Elektroskopas
electrometer in Japanese: 検電器
electrometer in Polish: Elektroskop
electrometer in Portuguese: Eletroscópio
electrometer in Russian: Электроскоп
electrometer in Albanian: Elektrometri
electrometer in Swedish: Elektroskop
electrometer in Turkish: Elektroskop
electrometer in Ukrainian: Електроскоп
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