currentvoltage
voltage=1000V,current=1/1000Amps, so power=1watt
now is this the same as 1V with 1Amp which is not dangerous to humans.
Does voltage not have any any effect if the current is too low?
Because voltage is energy consumed /charge , so voltage is dangerous independently or not?
why/why not?
Or is it current that is dangerous, regardless of voltage?
How much voltage is dangerous is not really a static number as it depends on your body resistance, time of exposure and source "stiffness" (i.e. how much current it can supply). You get figures like 60V (or as low as 30V) which are an attempt at an average figure above which "caution should be taken".
However, depending on how "conductive" you are at any one time, sometimes e.g. 50V might be quite safe and other times it may kill you.
DC or AC (and what frequency) seem to make a difference too, female or male, etc - this table is very instructive:
Figures as low as 20mA across the heart are given as possibly capable of inducing fibrillation - here is another table from the same source that gives body resistance based on different situations:
You can see that as low as 20V may be dangerous given the right conditions.
Here is the reference the tables came from, I think it is quite accurate based on some experiments I have done myself measuring body resistances. The rest of the site seems to be generally very well informed and presented from the bits I have read, so I think this may be quite a trustworthy source.
You're confusing "high voltage" with "high voltage loss". Ohm's Law governs the loss of voltage across a resistance for a given current passing through it. Since the current is low, the voltage loss is correspondingly low.
Best Answer
Current limited high voltage is indeed not dangerous. Static electricity is a good example.
According to IEC 62368, up to 2mA DC or 0.7mA peak AC is considered safe regardless of voltage. On the other hand 48VDC is normally considered safe but in hospital environment SELV is max 24V. 48VDC can kill you when you have probes inserted inside your body where the electricity can conduct directly through blood vessels.
With regard to unrestricted current, up to 60VDC or 42.4VAC peak is considered safe.
The key word here is current limited i.e. the current of a high voltage source is limited by means such as series resistor or an active current limiting device. For a capacitor charged to a given voltage there are voltage/capacitance charts that define safe charge level. At 2kV safe capacitance is quite small.
And, yes, a big electrolytic charged to 1kV will kill you so better stick to small ceramics.