> Another hint would be the fireman measuring a "current of
> 40,000 volts". Volts measure potential. Amps measure current. I
> got shocked with 100,000 volts from a tesla coil the other day
> and it just tingled, because the current was something measly.

What you say is of course true, but I'm surprised by your anecdote at the end. Another way "volt" is described is "force." My understanding is that when you get shocked, the "force" of the shock depends on the voltage, whereas how much damage it does is more dependent on the current.

In other words, high voltage, low current, will give you a powerful shock but likely do no damage, whereas low voltage, high current won't hurt so much as kill you from the physical damage it does.

So I'm kind of surprised you could get shocked by 100,000 volts and only feel a mild tingling.