voltmeter has high resistance while ammeter has low/negligible resistance.
thus voltmeter is connected in paralle while ammmeter is connected in series.
Since voltmeters are always connected in parallel with the component or components under test, any current through the voltmeter will contribute to the overall current in the tested circuit, potentially affecting the voltage being measured
this is because for measuring current whole currents must be passed through ammmeter which can be achieved by connecting it in ser
for measuring potential diff potential dif across the voltmeter must b=2the component across which pd 2b measured this canb done by connecting v in parralel . also current through the v should b minimum for accuracy