considering that when we use high voltage we have low current,and when use low voltage we have high current
P=V*I.?
2007-04-22 18:12:37 · 9 answers · asked by JAMAL B 1 in Science & Mathematics ➔ Engineering
OSHA and the NFPA 70E identifies potentials greater than 30V as being enough to overcome human contact resistance. Currents in the area of 50-75 mA are enough to cause ventricular fibrillation in humans. This is based on a typical healthy adult person.
When all is said and done, contact resistance determines the amount of current that flows through the body, however any voltage above 30V should be considered as hazardous.
While shock and electrocution are primary concerns for electrical workers, arc-flash is a much more hazardous event. Work should never be performed on energized equipment.
2007-04-23 00:01:53 · answer #1 · answered by Bryan H 3 · 0⤊ 0⤋
modern kills. the voltage (skill distinction) is the strain which pushes the present by way of a conductor and could be very very extreme devoid of modern flowing (as examples static electrical energy in clouds and capacitors) modern is the somewhat electron bypass. small currents will kill whilst low voltages if exceeded promptly around the middle. in spite of the undeniable fact that there ought to be a sufficiently extreme voltage tocontinual the present by way of the exterior, this is a stable electric insulator. If in spite of the undeniable fact that there is a very extreme voltage, the present will penetrate the exterior and enter the physique which, basically being a salt answer,conducts the electrical powered energy o.k.. So holding a the two terminals of a circuit donning a very small modern yet with a very extreme voltage is incredibly unwise ;-)
2016-11-26 21:59:11 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Well, electric current is caused by voltage, so voltage is more dangerous. If you consider electricity as water, voltage is like pressure, and current is like the volume of water flowing. You need pressure to make the water go, no matter how much water you have.
2007-04-22 18:20:49 · answer #3 · answered by Anonymous · 0⤊ 0⤋
High current is the most dangerous, providing the voltage is enough to overcome resistance. You can get zapped by 30,000 volts at milliamp current from a car high tension lead without problem, but 100 volts at high current will carry you off.
2007-04-22 18:18:16 · answer #4 · answered by Anonymous · 1⤊ 0⤋
a high voltage can stop your heart so i would say that. a low voltage for a long time will have affects but a high voltage causes more damage faster
2007-04-22 18:34:37 · answer #5 · answered by Chris W 4 · 0⤊ 0⤋
the both is dangerous because if there are no current there is no voltage to.
voltage is indicate the power or capacity of current.
2007-04-22 18:18:20 · answer #6 · answered by Faisal R 3 · 0⤊ 0⤋
Current
Say it only takes 100 mA to kill a person.
If your hands are all wet, and there is minimal resistance from your body, then even a small voltage can kill you.
2007-04-22 19:43:07 · answer #7 · answered by TV guy 7 · 0⤊ 0⤋
AMPs is what kills humans. 6 milliamps of electricy will kill a human. So voltage is what is more dangerous.
2007-04-22 19:34:15 · answer #8 · answered by Koko 4 · 0⤊ 0⤋
Don't forget your AMPS.
2007-04-22 18:15:50 · answer #9 · answered by rougerocker 3 · 0⤊ 0⤋