amper (A)

amper (A)

1) Unit of electric current. "The ampere is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 meter apart in vacuum, would produce between these conductors a force equal to 2 × 10-7 newton per meter of length" CIPM 1946, Resolution 2, approved by the 9th CGPM 1948). A current of 1 A is equivalent to the passage along the filament of a light bulb of about 6 × 1018 electronic charges per second.

2) constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 meter apart in vacuum, would produce between these conductors a force equal to 2 × 10-7 newton per meter of length

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ส่วนหนึ่งของคำพูด: noun
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อุตสาหกรรม/ขอบเขต: Astronomy
Category: General astronomy
Company: Caltech
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amper

Electrical equipment; Circuit breakers

The equivalent of one coulomb per second or the steady current produced by one volt applied across a resistance of one ohm.

amper

Electrical equipment; Fuel cell

The ampere, in practice often shortened to amp, (symbol: A) is a unit of electric current, or amount of electric charge per second.

amper

Electrical equipment; Electricity

The unit expressing the rate of flow of an electric current. One ampere is the current produced by a difference in potential of one volt across a resistance of one ohm; An ...