SI units Flashcards
Newton
The amount of force needed to accelerate a mass of one kilogram at a rate of one meter per second squared N kgm/s²
Joule
The amount of energy transferred when one newton of force moves an object one meter J kgm²/s²
Watt
The rate of energy transfer equal to one joule per second W kgm²/s³
Pascal
The pressure of one newton per square meter Pa kg/m·s²
Meter
The base unit of length in the SI system m
Kilogram
The base unit of mass in the SI system kg
Second
The base unit of time in the SI system s
Ampere
The base unit of electric current in the SI system A
Volt
The electric potential difference when one joule of energy is used per coulomb of charge V kgm²/s³A
Ohm
The resistance when one volt causes a current of one ampere Ω kgm²/s³A²
Coulomb
The amount of electric charge transferred by a current of one ampere in one second C As
Hertz
One cycle per second Hz 1/s
Kelvin
The base unit of thermodynamic temperature K
Tesla
The magnetic flux density that causes a force of one newton on a wire carrying one ampere per meter T kg/s²A
Weber
The magnetic flux that produces one volt when it changes uniformly in one second Wb kgm²/s²A
Lumen
The luminous flux emitted in a solid angle of one steradian by a source of one candela lm cd·sr
Candela
The base unit of luminous intensity cd
Farad
The capacitance when one coulomb raises the potential by one volt F s⁴A²/kgm²
Henry
The inductance when a current change of one ampere per second induces one volt H kgm²/s²A²
Gray
The absorption of one joule of radiation energy per kilogram of matter Gy m²/s²
Sievert
The biological effect of one gray of radiation Sv m²/s²
Becquerel
One radioactive decay per second Bq 1/s
