quote:
Originally posted by andrewdodd13
What you mean like sticking a 9V battery on yer tongue? 
It's the current. Sort of. For example, a 9V battery should always put out 9V. So, stick the 9V battery against yer tongue, OUCH. Cause your tongue is wet, it has less resistance, hence a bigger current.
Put your finger across it, nothing happens, because your skin has a much larger resistance.
A 9 volt battery doesn't always put out 9 volts. If it's being asked to deliver a lot of power (which it can't) the voltage will be depressed.
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