Physical Quantities with different names but are the same

More Physics Tidbits

Some physical quantities have many variations although they are essentially the same type of quantity. In this video, Teacher Zyen explains three of the different terms that are the same as “length”.

Here are some of the physical quantities that have many variations with different meanings, but are actually still the same type of quantity.

Length (S.I. Unit: metre)

  • width
  • breadth
  • height
  • distance
  • displacement
  • radius
  • diameter
  • thickness

Force (S.I. Unit: Newton)

  • weight
  • tension
  • resistant force
  • drag
  • thrust
  • lift

Voltage (S.I. Unit: Volt)

  • potential difference
  • electromotive force

Examples of S.I. Units

More Physics Tidbits

What are S.I. Units and why do we need them? Teacher Zyen explains it in this video.

Here is a list of S.I. Units of some common physical quantities.

Physical QuantityS.I. Unit
Lengthmetre (m)
Timesecond (s)
Masskilogram (kg)
TemperatureKelvin (K)
Electric currentAmpere (A)
VoltageVolt (V)
Resistanceohm (Ω)
Force / WeightNewton (N)
PressurePascal (Pa)
EnergyJoule (J)

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