Pass electricity though something and the thing will generally resist the electricity to some extent and let some of it though.

 

I was wondering if by testing a material with electricity to see how much it resists could tell you something about the material.

 

Moreover I wondered if you varied something about the electricity and do many tests probably automatically whether you could get a profile of the material. An example of something to vary could be voltage\current ratio or frequency in AC\AV. This would provide a unique 1D or 2D chart for each material.

I was wondering if by testing a material with electricity to see how much it resists could tell you something about the material.

Yes. It is often used in Archaeology to detect what types of objects are under ground (usually whether there are stones, or changes in soil types).

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