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

Thread starter Drao92
Start date Mar 24, 2012
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Sensitivity

AI Thread Summary

A galvanometer with low sensitivity is preferred for certain measurements because it can handle higher currents without saturation, making it suitable for applications where precision is less critical. The discussion highlights the importance of understanding voltmeter sensitivity, specifically how it relates to internal resistance. For a voltmeter with a sensitivity of 40 kohm/V and a scale of 10 V, the internal resistance would indeed be 400 kohm. The link provided offers a method for calculating voltmeter sensitivity, which is essential for accurate measurements. Understanding these concepts is crucial for selecting the appropriate measuring instrument for specific electrical applications.

Mar 24, 2012

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?

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Mar 24, 2012

QuarkCharmer

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

May 17, 2012

anikwe

explain low sensitivity of a galvanometer

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