Electric current
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The Ampere (or Amp.) for large things such as a toaster, microwave or refrigerator. Most electronic devices use current measured in milliamperes (or miliamps) which measures thousanth (1/1000) of an ampere.
An ammeter is a device to measure current. Its name is probably derived from the unit it measures, the ampere. Whether this is the correct etymology or not, the ampere is the SI unit for current.
An ammeter is a device which measures the magnitude of an electric current, calibrated in amperes.
No, a meter is a unit of length in the International System of Units (SI). The SI unit for volume is the cubic meter (m^3).
The Kelvin is the SI unit for thermodynamic temperature.
The Siemens is the SI unit for the connectivity.
The SI unit equivalent to Nm is Joule (J).
The SI unit for mass is the kilogram (kg).