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international system of units click to hear : international system of units

Decimal system established by the 11th General Conference on Weights and Measures (GCWM) in 1960 and used by many countries.
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See international system of units in : french | spanish
measurement of electric resistance measurement of electric potential difference measurement of luminous intensity measurement of power measurement of energy measurement of electric current measurement of electric charge measurement of frequency volt ohm candela coulomb joule watt hertz ampere

measurement of electric resistance click to hear : measurement of electric resistance

measurement of electric potential difference click to hear : measurement of electric potential difference

measurement of luminous intensity click to hear : measurement of luminous intensity

measurement of power click to hear : measurement of power

measurement of energy click to hear : measurement of energy

measurement of electric current click to hear : measurement of electric current

measurement of electric charge click to hear : measurement of electric charge

measurement of frequency click to hear : measurement of frequency

volt click to hear : volt

Difference in potential between two points of a conductor carrying a constant current of 1 ampere when the power between these points is 1 watt.

ohm click to hear : ohm

Electrical resistance between two points of a conductor carrying a current of 1 ampere when the difference in potential between them is 1 volt.

candela click to hear : candela

Unit of light intensity equivalent to a radiant intensity of 1/683 watts per steradian (solid angle).

coulomb click to hear : coulomb

Amount of electricity carried in 1 second by a current of 1 ampere.

joule click to hear : joule

Amount of energy released by the force of 1 newton acting through a distance of 1 meter.

watt click to hear : watt

Energy transfer of 1 joule during 1 second.

hertz click to hear : hertz

Frequency of a periodic phenomenon whose period is 1 second.

ampere click to hear : ampere

Constant current of 1 joule per second in a conductor.