milliampere

Such devices apply extremely small (less than 1 milliampere) electrical currents to nerves using electrodes placed on the skin.

Beware, however; because of evolving standards, the measurement is often stated in a way that is not very useful, in terms of the protection offered at one milliampere, a very small amount of electricity.

As an example, a meter movement that required 1 milliampere for full scale deflection, with an internal resistance of 500 ohms, would, on a 10-volt range of the multimeter, have 9,500 ohms of series resistance.

This represents 330% of the luminosity that PEP-II was designed to deliver, and was produced along with a world record for stored current in an electron storage ring at 1,732 Milliampere, paired with a record 2,940 mA of positrons.

WEPCO had measured on the farm currents due to stray voltage below one milliampere, the "level of concern" set by the Wisconsin Public Service Commission, but the court ruled on procedural grounds that the utility could be found negligent under common law even though they met the state standard.