Why is current a fundamental quantity whereas voltage is not???
Answers
Current is a fundamental quantity
but voltage = current * resistance
Answer-The SI does not define 'fundamental quantity', instead it uses the term 'Base Unit'. All other units are 'Derived Units', so-called because they are each derived from combinations of Base Units.
The SI does not define 'fundamental quantity', instead it uses the term 'Base Unit'. All other units are 'Derived Units', so-called because they are each derived from combinations of Base Units.The ampere is a Base Unit, and is defined in terms of the force between two, parallel, current carrying conductors. This definition is important, because it makes use of one of the three effects of an electric current (electromagnetism) to enable it to be measured with great accuracy. Furthermore, it is the unit by which electrical units are linked to mechanical units. If you like, the ampere is the 'bridge' between 'mechanical' units and 'electrical units', which makes it very important.