how charge is afundamental quatity ?
It's true that 1 amp=1 Coulomb/second but of course 1 Coulomb=1 Amp second.I think the choice of what's considered to be more fundamental is guided largely by the experimental ease by which the unit can be established.The Ampere is defined with reference to the force between parallel current carrying wires which presents experimental difficulties to establish exactly but nevertheless is measurable to a high degree of accuracy.If we don't define the Coulomb with reference to the Ampere then how else should we define it?There must be ways but I'm assuming that the experiments needed to establish the unit are less accurate than the ones currently used.
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