For house hold electrical supply 220V AC is used in India. In other countries 110V AC is used. Why? What are pros and cons?
2006-07-08 02:08:27 · 5 answers · asked by K N Swamy 3 in Science & Mathematics ➔ Physics
Transmitting at higher voltages causes less transmission loss (joule loss i.e I^2R )
in 'poorer' countries like india which cannot afford these losses, transmission takes place at higher voltages.
eg 220ac = 220 X 1.414 effective = 311 volts (fatal shock)
in americas, life i guess is more valued, they arent much concerned about transmission loss. u cant get a shock from a 110 V ac line. It is much safer.
sorry pal, if u were disheartened.
2006-07-08 02:34:15 · answer #1 · answered by Sean 3 · 0⤊ 0⤋
All land line telephony in the US is source/reference powered by 48v DC. (Exclusive of optical fiber, 0v on fiber). Where did you get the idea US used 12v?
2006-07-08 10:34:47 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It is not 12V in Europe or America.
2006-07-08 09:23:49 · answer #3 · answered by Epidavros 4 · 0⤊ 0⤋
Geee! I never thought about this. Ahhhh...Do I need to call my electrician at home?
2006-07-08 10:29:10 · answer #4 · answered by A.j. 3 · 0⤊ 0⤋
becoz they wanted u to ask the question
2006-07-08 10:19:10 · answer #5 · answered by Monica 3 · 0⤊ 0⤋