can we just all use 100 volts? that will help conserve electricity, right?
also, why just we all use DC instead of AC? this way, no one gets electricuted, no?
2007-07-24 20:29:38 · 3 answers · asked by jor-jor 5 in Science & Mathematics ➔ Engineering
Most appliances have internal circuitry that converts AC into DC, but high-voltage AC travels long distances more efficiently.
It is easier to get electrocuted with DC.
2007-07-24 20:36:27 · answer #1 · answered by Julio 5 · 0⤊ 1⤋
Higher voltages will transmit with less loss over a given conductor size. 220V is used on appliances such as electric ranges and clothes dryers that have high current requirements. Using a lower voltage would actually be less efficient.
AC is used because the voltage can be stepped up or down with transformers. It is transmitted at high voltages for better efficiency, then stepped down to 110 and 220V for household use for safety. DC is much harder to distribute efficiently. And you can be electrocuted by DC just as easily as by AC if the voltage is high enough.
2007-07-24 20:46:10 · answer #2 · answered by injanier 7 · 2⤊ 0⤋
We can't use DC because it is costlier to produce and more difficult to transport. Also, there are more chances of getting electrocuted by DC
2007-07-24 20:37:53 · answer #3 · answered by My name's none of your busin 4 · 0⤊ 0⤋