The SI unit for electric current is the ampere (A).
The ampere (A) is the base unit for current in the SI system.
There is not a standard SI unit to measure sphericity.
Gram.
The 'ERG' is the standard unit for work or mechanical energy.
millimeters or possibly centimeters but most likely millimeters
The standard unit of measure for sound is the decibel (dB).
is meant by measurement in che mistry
The standard unit of measure for length in the metric system is the meter.
Ampere is the unit used to measure the current.
The SI unit of electric current is the Ampere.
you can measure the unit of a current in amps (A) we measure the current using a ammeter
To measure a physical quantity correctly and need to compare it with some standard quantities. Thus a standard unit is needed to measure a quantity correctly.
The standard unit to measure mass is kilograms.
It depends on what you are trying to measure. There are different standard units for different characteristics.
Hertz.
grams
A second.