Why is charge a derived quantity????
convention. Current was measured before charge.
There are seven base units from which all other units are derived.
-ampere (electric current)
-candela (luminous intensity)
-mole (concentration of substance)
Electric charge is measured in Coulombs, or Amperes seconds.
In SI, current is a fundamental unit (ampere) and charge is a derived unit (coulomb = ampere · second) for practical reasons. It's easier to implement the standard for current precisely, by measuring the force between two current-carrying wires, than it would be to implement a standard for charge precisely, involving something like measuring the force between two charges, or counting electrons.
Ampere seconds, not amperes per second.
Edited and corrected.
No prob. Thanks for that. Really cleared it up
Separate names with a comma.