What Are Milliamps?

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A milliamp is a unit used to measure electrical current and is equal to one one-thousandth of an ampere. The word "milliamp" is short for "milliampere." The ampere is the basic SI unit used to measure current, as established in 1948. The abbreviation for "ampere" is "A," and the abbreviation for "milliampere" is "mA."