Note: While noting down the measurement data, the type Alternate Current (symbol: ac) and Direct Current (symbol: dc) are used for clarifications. For example, 12 Vdc and 220 Vac are correct. 12VDC and 220VAC and 12vdc and 220vdc etc. are not correct.
7. Electrical Power: symbol (W). Read as Watt. It is capital W. Writing 100 W and 100 Watt is correct. 50 w or 50 Wt. or 50 Watts is not correct.
8. Volume: symbol (L). Read as Litre. It is capital L. Writing 10 L and 10 Litre is correct. 10 l or 10 lt. or 10 Litres or 10 ltr or 10 10 lit are incorrect forms.
Note: there are other base and derived units which need clarifications about their symbols and these will be shared shortly in some other article.
How to write numbers in the SI system of units? The followings are the rules and examples are provided for registering the numbers for science, engineering, technology-related measurements. This set of rules does not apply to financial data.
Rule 1: On the left side of the decimal point after every three digits give one space. If there is no decimal then after every three digits from left to right give on space and repeat till the complete data is written.
