A 3 year old child with 890kΩ of resistance in series 110 volts can only reasonably expect to carry about 120µA of current. Not too big a deal, really. 20mA is pretty painful, 100mA will kill ya, they say, but really you should figure out power to know for sure.
For example, I whack my students with upwards of 200kV worth of static electricity. If you did the math there, a 1MΩ 20 year old would carry 200mA. More than enough to kill them. But it’s fine, because amperage has a sneeky unit built into it. Amperage is Coulomb / Second. So I could zap them with a whole Coulomb of charge, which if it lasted for a whole second would constitute an Amp of current and that would kill them. But if the Joules / Coulomb (Voltage) dissipates over just a microsecond the actual current is much less.
Power on the other hand is Joules per Second. So if you multiply the voltage times the current, the Coulombs cancel out and you end up with Joules per Second (Watts). It’s really the watts that get ya, because that’s a measurement of how fast the energy has to dissipate in your body.
All I know is a sweater I bought was picking up static electricity very badly. So, I returned it to the store. They gave me another one free of charge.
Both you boys aint wired right..Fangbeer..someday a student is going to kick you in the joules..Gene..I think we both discovered at an early age that the paint chips with lead in them tasted the best..
Now both of you keep on revolting..
Seeing the modern youth of this nation makes me weep. What kind of moron puts a butter knife if the electrical socket? My generation at least knew well enough that you get much better results using a fork.
The time Dennis the Menace gave Mr. Wilson a heart attack just messing around with him.
From our forthcoming book, Idiomatic Illustrations, Illustrated – the entry for “A shock of white hair”…
Been there, done that (used a paper clip bent to get both sides of the outlet), got the scars to show for it.
It was either that or have Mom have is penis cut off.
A 3 year old child with 890kΩ of resistance in series 110 volts can only reasonably expect to carry about 120µA of current. Not too big a deal, really. 20mA is pretty painful, 100mA will kill ya, they say, but really you should figure out power to know for sure.
For example, I whack my students with upwards of 200kV worth of static electricity. If you did the math there, a 1MΩ 20 year old would carry 200mA. More than enough to kill them. But it’s fine, because amperage has a sneeky unit built into it. Amperage is Coulomb / Second. So I could zap them with a whole Coulomb of charge, which if it lasted for a whole second would constitute an Amp of current and that would kill them. But if the Joules / Coulomb (Voltage) dissipates over just a microsecond the actual current is much less.
Power on the other hand is Joules per Second. So if you multiply the voltage times the current, the Coulombs cancel out and you end up with Joules per Second (Watts). It’s really the watts that get ya, because that’s a measurement of how fast the energy has to dissipate in your body.
All I know is a sweater I bought was picking up static electricity very badly. So, I returned it to the store. They gave me another one free of charge.
Both you boys aint wired right..Fangbeer..someday a student is going to kick you in the joules..Gene..I think we both discovered at an early age that the paint chips with lead in them tasted the best..
Now both of you keep on revolting..
Seeing the modern youth of this nation makes me weep. What kind of moron puts a butter knife if the electrical socket? My generation at least knew well enough that you get much better results using a fork.