How can you measure voltage - my friend confused me.(adsbygoogle = window.adsbygoogle || []).push({});

We all know we can do it by a voltmeter but a voltmeter is a galvanometer and we need to know the resistance of the galvanometer and current passing through it to find voltage

But to find out resistance we need to know current and voltage - and for current we need voltage and resistacne

turns out that we need the other two to determine the value--- then how do we measure the emf of a cell, resistance of a wire and current???

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# How do you measure voltage of cell?

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