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ampere

ampere

1 4.3
A unit for measuring electric current like the flow in a wire
  • noun
  • /æmˈpɪr/
  • Specialized
translation icon : amperio
  • An electric motor may require 30 amperes to start but can run on a lower current once operational.
  • current in amperes

As you know, we have a whole series of fundamental units, the second, the meter and so on, the ampere.

Examples

  • The strength of the electric current is measured in amperes, indicating how much charge flows per second.

  • Researchers there conducted an experiment in superconductivity that produced a current of 287,000 amperes, the highest current ever sent through a superconducting cable.

    Academic text (1993)
  • So, if you want faster charging, simply try with a higher ampere output charger.

    Blog text (28)
  • So I need to do more research on that to determine the amount of current or amperes it takes while charging.

    Blog text (5)
  • One ampere corresponds to about 18.4 gauss.

    Academic text (1993)
  • All tests were conducted with a 100-kilogram load, speed is in m/s, and current in amperes.

    Academic text (1995)
  • Batteries are rated in ampere hours (amp-hrs).

    Academic text (1995)
  • The battery shown here is a sealed gel cell battery rated at 6 volts at 4 ampere-hours.

    Academic text (2007)
  • The underlying electric current pulses were estimated to have maxima of a few amperes.

    Academic text (2006)
  • Household circuits typically use a standard of 15 or 20 amperes to power devices safely.

Synonyms

amp
vsampere
  • Specialized
26 5.8

A unit for measuring the flow of electricity

is the standard full name used instead of shortened forms
A
vsampere
  • Specialized
4 3.3

Unit of electric current shown as A on devices

is the full word form rather than a single-letter symbol

Compounds

ampere-hour
  • Specialized
6.3

The amount of electricity a one-ampere current moves in one hour

ampere-minute
  • Specialized
7.1

Amount of electric charge that a current of one amp moves in one minute

ampere-second
  • Specialized
5.5

A unit of electric charge equal to one coulomb

ampere-turn
  • Specialized
7.3

A unit for magnet strength that one ampere of current produces in one loop of wire

kilovolt-ampere
  • Specialized
6.3

A unit of electrical power for alternating current equal to 1,000 volt-amperes

9.5

An older unit for electric current slightly less than the modern ampere

volt-ampere
  • Specialized
6.3

A unit for electrical power in alternating current circuits equal to one volt times one ampere

How Strong

amperage
  • Specialized
4 6.7
ampere
  • Specialized
1 4.3
milliampere
  • Specialized
5.1

Surface Forms

ampere singular
amperes plural

Etymology

Ampere is named after the French scientist André-Marie Ampère, who studied electric 'current'. So the ampere measures how much electric 'current' flows in a circuit, and people often call it an amp.