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    Ampere

    ˈamˌpēr

    Meaning & Definition

    noun
    One of the fundamental units in the International System of Units (SI).
    Electricians often measure the current in amperes to ensure safety in installations.
    The ampere, often abbreviated as 'A', is the SI base unit of electric current, defined as the flow of electric charge across a surface at the rate of one coulomb per second.
    The circuit requires a current of 5 amperes for optimal performance.
    A specific measure of electric current.
    The light bulb operates at a current of 0.5 amperes.
    A unit used in electrical engineering to quantify current.
    To calculate the power consumption, multiply the voltage by the current in amperes.
    The amount of electric charge in coulombs flowing through a conductor per unit time.
    A device may be rated for a maximum of 10 amperes to prevent overheating.

    Etymology

    Named after André-Marie Ampère, a French physicist.

    Common Phrases and Expressions

    milliampere
    One thousandth of an ampere.
    kiloampere
    One thousand amperes.
    microampere
    One millionth of an ampere.

    Related Words

    volt
    The unit of electric potential.
    ohm
    The unit of electrical resistance.
    coulomb
    The unit of electric charge.

    Slang Meanings