What is an Amp |

This electronics video tutorial provides a basic introduction into the amp which is a unit of electric current. It explains how current describes the rate of charge flow and it relates the amp to the number of electrons flowing in a circuit per second.

#### What is an Amp?

The ampere (/ˈæmpɪər, æmˈpɪər/ or /ˈæmpɛər/ (UK), symbol: A), often shortened to "amp",is the base unit of electric current in the International System of Units (SI). It is named after André-Marie Ampère (1775–1836), French mathematician and physicist, considered the father of electrodynamics.

The International System of Units defines the ampere in terms of other base units by measuring the electromagnetic force between electrical conductors carrying electric current. The earlier CGS measurement system had two different definitions of current, one essentially the same as the SI's and the other using electric charge as the base unit, with the unit of charge defined by measuring the force between two charged metal plates.

The ampere was then defined as one coulomb of charge per second. In SI, the unit of charge, the coulomb, is defined as the charge carried by one ampere during one second.

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The ampere was then defined as one coulomb of charge per second. In SI, the unit of charge, the coulomb, is defined as the charge carried by one ampere during one second.

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