A voltmeter has a very high but finite internal resistance
PHYSICS · Single correct · A Level · Physics · Electricity · Electricity
Problem
A voltmeter has a very high but finite internal resistance. When it is connected across a resistor already carrying current in a circuit, the potential difference recorded by the meter, compared with the true potential difference across the resistor before the meter was connected, will be
(a) slightly greater
(b) slightly less
(c) exactly the same
(d) sometimes greater and sometimes less