What are the 7 main SI units?

Definitions of SI Base Units

  • Second – Unit of Time. Symbol: s. …
  • Meter – Unit of Length. Symbol: m. …
  • Kilogram – Unit of Mass. Symbol: kg. …
  • Ampere – Unit of Electric Current. Symbol: A. …
  • Kelvin – Unit of Thermodynamic Temperature. Symbol: K. …
  • Mole – Unit of Amount of Substance. Symbol: mol. …
  • Candela – Unit of Luminous Intensity. Symbol: cd.

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