Kaasaegseid pinnalaengumõõtureid, mis põhinevad elektron- või pooljuhttehnoloogial, saab kasutada pinge ja laengu mõõtmiseks väga väikeste lekkevoolude juures kuni 1 femtoamprini.
Pinnalaengumõõturit kasutatakse nt ka fotoretseptori pinnalaengu mõõtmiseks.
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.
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