# S.I Units of Physical Quantity

This post is about a brief summary of the SI units of physical quantity and the modern metric system of measurement. A physical quantity is a quantity that can be used in the mathematical equations of science and technology. Table below is the collection for learning the most often used physical quantities together with their units and symbols. A must for everyone who deals with physics.

 Quantity SI Symbol Length Meter M Mass Kilogram Kg Time Second S Work and Energy Joule J Electric Current Ampere A Temperature Kelvin K Intensity of flame Candela Cd Angle Radian Rad Solid angle Steredian Sr Force Newton N Area Square meter M2 Volume Cubic meter M3 Speed Meter per second Ms-1 Angle Velocity Radian per second Rad s-1 Frequency Hertz Hz Moment of inertia Kilogram square meter Kgm2 Momentum Kilogram meter per second Kg ms-1 Impulse Newton second Ns Angular Momentum Kilogram square meter per second Kgm2s-1 Pressure Pascal Pa Power Watt W Surface tension Newton per meter Nm-1 Viscosity Newton second per square m. N.s.M-2 Thermal Conductivity Watt per meter per degree celcius Wm-1c-1 Specific Heat capacity Joule per kilogram per Kelvin Jkg-1K-1 Electric charge Coulomb C Potential Difference Volt V Electric Resistance Ohm O Electrical Capacity Farad F Magnetic Induction Henry H Magnetic Flux Weber Wb Or photometric power Lumen Lm Intensity of illumination Lux Lx Wave length Angstrom A0 Astronomical distance Light year ly