I have this setup.
It consists of a battery of no internal resistance with voltage $V$ and a resistor with resistance $R$. It also consists of a voltmeter of some (not so large) resistance as good ones should have.
Now my question is, will the resistance of the voltmeter matter for this particular circuit?
I think that the voltmeters need to be high resistance only when there are multiple resistances in the circuit... and as the internal resistance of the battery always contributes to the total resistance in real cases, a voltmeter is always expected to be very high resistance. (Please correct me if I'm wrong)
I have seen other questions related to voltmeters on this site and googled up but couldn't find an answer.