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No the SI base units are:

  • metre for length
  • kilogram for mass
  • second for time
  • ampere for electric current
  • kelvin for temperature
  • candela for luminous intensity
  • mole for the amount of substance.

Voltage is derived from the base units, metre, kilogram, seconds and ampere.

V = m2·kg·s−3·A−1

Definition of voltage

The voltage between two ends of a path is the total energy required to move a small electric charge along that path, divided by the magnitude of the charge.

V = J/C

where:

J=m2·kg·s−2

C=s·A

V = (m2·kg·s−2)/(s·A)

Thus:

V = m2·kg·s−3·A−1

For more information look at the subject of "SI derived units"

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Q: Is a volt an SI base unit?
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