Why is a galvanometer with low sensitivity preferred for certain measurements?

[Drao92]

I don't know if i understood very well what does voltmetre sensitivity mean.
So, if a have a voltmetre with the sensitivity 40kohm/V and his U( in scale) is 10 V, the voltmetre internal resistance is 400kohm?

 

[QuarkCharmer]

This short page explains how to calculate voltmeter sensitivity:
http://www.tpub.com/neets/book16/68e.htm

 

[anikwe]

explain low sensitivity of a galvanometer