Hi guys,
Ive been reading Vol I on this website, in particular the series on electric shock. From this site and other sources I have come to understand current is induced in anything that has electrons that can be motivated with a voltage. That makes a lot of sense. I have electrons, the wire has electrons, if I become one with the wire (depending on how) I get shocked. I share the current.
What confuses me is the ability for a bench-top power supply to be able to produce a current, rather than let voltage and resistance determine current in a system. So, if I have a voltage and a current, then by token I have already determined the resistance. Right? Taking this further I know the resistance through my body will vary by physical contact and a host of other factors, so how is it that a power supply can push a fixed amperage and fixed voltage through my body without changing based on the resistance of my body?
Ive been reading Vol I on this website, in particular the series on electric shock. From this site and other sources I have come to understand current is induced in anything that has electrons that can be motivated with a voltage. That makes a lot of sense. I have electrons, the wire has electrons, if I become one with the wire (depending on how) I get shocked. I share the current.
What confuses me is the ability for a bench-top power supply to be able to produce a current, rather than let voltage and resistance determine current in a system. So, if I have a voltage and a current, then by token I have already determined the resistance. Right? Taking this further I know the resistance through my body will vary by physical contact and a host of other factors, so how is it that a power supply can push a fixed amperage and fixed voltage through my body without changing based on the resistance of my body?