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If static electricity can hit 20 kV, how is it still harmless?

Best Answers

Because our body has high resistence of about some Mega Ohms. And that is not the voltage that can kill us, but the current. That enormous flow of electric charges or particles can interfere with our brain signals which is also electric. read more

Static electricity can have a high voltage, but there’s not that much stored total energy, so the current is very small and very short-lived. The total energy of a static ‘zap’ from a doorknob is 1000 times smaller than a defibrillator. read more

In that model, the voltage can get as high (depending on the source) as 25 kV (though some claim only as high as 3 kV). Using the larger numbers, the person would have an energy “charge” of approximately 150 millijoules. read more

300,000 Volt Hand Driven Van De Graaff Static Electricity Generator This hand-cranked Van de Graaff with 300 kV potential, including instructions and accessories, is essentially a turn-key operation. Set it on your lab table, invite a volunteer to start cranking, and then demonstrate the static electricity produced. read more

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