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An AA size dry cell has a capacity of about 2,000 to 3,000 milliampere-hours. An average smartphone battery usually has between 2,500 and 4,000 milliampere-hours of electric capacity. Automotive car batteries vary in capacity but a large automobile propelled by an internal combustion engine would have about a 50-ampere-hour battery capacity.
The ampere is named for French physicist and mathematician André-Marie Ampère (1775–1836), who studied electromagnetism and laid the foundation of electrodynamics.In recognition of Ampère's contributions to the creation of modern electrical science, an international convention, signed at the 1881 International Exposition of Electricity, established the ampere as a standard unit of ...
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A picoammeter, or pico ammeter, measures very low electric current, usually from the picoampere range at the lower end to the milliampere range at the upper end. Picoammeters are used where the current being measured is below the limits of sensitivity of other devices, such as multimeters.
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Analog multimeter Digital multimeter. A multimeter (also known as a volt-ohm-milliammeter, volt-ohmmeter or VOM) [1] is a measuring instrument that can measure multiple electrical properties.
Milliampere (mA), a multiple of the SI unit of electric current, the ampere Myr , Mya , or Ma, meaning "million years ago"; (NB: broadly equivalent to "Megaannum (Ma)", see above) Other uses in science and technology
Milliampere second (mAs), a fraction of an ampere hour, a unit of electric charge; Milliarcseconds (mas), a unit of angular measurement; Magic angle spinning, a technique used in solid state nuclear magnetic resonance spectroscopy