what's SI units of energy and power?

1个回答

  • TABLE D.1 SI Units

    SI Base Unit

    Base Quantity Name Symbol

    Length Meter m

    Mass Kilogram kg

    Time Second s

    Electric current Ampere A

    Temperature Kelvin K

    Amount of substance Mole mol

    Luminous intensity Candela cd

    TABLE D.2 Some Derived SI Units

    Expression in Expression in

    Terms of Base Terms of Other

    Quantity Name Symbol Units SI Units

    Plane angle radian rad m/m

    Frequency hertz Hz s11

    Force newton N kg m/s2 J/m

    Pressure pascal Pa kg/m s2 N/m2

    Energy; work joule J kg m2/s2 N m

    Power watt W kg m2/s3 J/s

    Electric charge coulomb C A s

    Electric potential volt V kg m2/ A s3 W/A

    Capacitance farad F A2 s4/kg m2 C/V

    Electric resistance ohm 2 kg m2/A2 s3 V/A

    Magnetic flux weber Wb kg m2/ A s2 V s

    Magnetic field intensity tesla T kg/A s2

    Inductance henry H kg3m2/A2 3 s2 T3m2/A