How to tell the difference between a unit and a symbol in Electronics…

The unit expresses a value, whilst the symbol is just that: a symbol in a formula, and it’s important not to get the two mixed up.

Also, don’t confuse the symbols, as they may not always be obvious. For example, it’s easy to remember C is for capacitance but then it can’t be used again for current, so current is allocated the symbol I, which appears unrelated!

Use the table below to help you remember:

Find out more tips to help you with electronics in Electronics in easy steps.


192 pages
By Bill Mantovani
ISBN: 9781840787597