Resistance of this part will be 1 by R total equal to 1 by resistance of the voltmeter means that is resistance of the galvanometer plus additional resistance in volt in galvanometer we have added as I showed you as I showed you here.
ভোল্টমিটারের রোধ হল গ্যালভানোমিটারের রোধ এবং অতিরিক্ত বড় রোধটির যোগফল।