Hi dear folks,
Actually this is the question confused me since mid-school physics class- How does electric shock happen? or more specifically, high voltage or high current?
Now the naive explanation is: from Ohm's law we all know voltage = resistance x current, so for our body saying high voltage seems to be equal to saying high current. But let's suppose:
1. I'm standing on an ideal non-conductor plate(wood, rubber..), then even I touch a high voltage object, as long as there is no loop inside my body(for example use both hands to touch), I won't get electric shock, right?
2. Now if 1 is true, that means I'm now equal-potential with the high voltage object, but how? There must be electron moving otherwise my electrical potential shouldn't change, which means there was actually current flowing toward(against) my body. How could I survive that current?
3. Similarly, now if I take my hand off and walk down that non-conductor plate, will I get electric-shock? because I was previously equal-potential to that high voltage object, now there should be potential difference between me and the floor.
And a related question: if one gets electric shocked, which means current flowed through his body, where does those electrons come from? From the electric source or the electrons inside our body?
THX!
PS:
I learned a lot from this video: