Unlike the idealized voltmeter, a real voltmeter has a resistance that is not infinitely large. part a a voltmeter with resistance rv is connected across the terminals of a battery of emf e and internal resistance r. find the potential difference vmeter measured by the voltmeter.

Explanation:

A real voltmeter is connected to a non ideal battery of EMF "E"

here the resistance of the voltmeter is given as

also the internal resistance of the cell is given as

now the total resistance of the given combination of cell and the voltmeter is given as

now as per ohm's law the current is given as

now potential difference across the voltmeter is given as

where is the circuit diagram ?