Help please
I am lost :(
2007-05-07 06:50:46 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Power
= Voltage*Current
= V*I
4000 = 220* I
I = 4000/220=18.182 A
2007-05-07 06:55:32 · answer #1 · answered by Som™ 6 · 1⤊ 3⤋
W = V x A
A = W/V = 4000 ÷ 220 = 18.182 Amps
Edit: Considering that most of the answers are correct, who on earth keeps handing out the 'Thumbs down' ?
2007-05-08 10:28:14 · answer #2 · answered by Norrie 7 · 0⤊ 2⤋
W = V X I
4000 = 220 X I
I = 4000 / 220 = 18.181818...amps
2007-05-07 14:00:01 · answer #3 · answered by Swamy 7 · 0⤊ 4⤋
Assuming this is ac, the equation Power = volts times amps is not strictly correct because the drier contains a motor and power factor effects the numbers. I could scream for every time I see people say P=VI for ac circuits.
Basically you do not have enough information for accurate solution but you can estimate using the equation I put above since most of the load is resistive.
2007-05-07 14:04:22 · answer #4 · answered by Poor one 6 · 0⤊ 4⤋
(watts = volts x amps)
current = 4000/220 amps
2007-05-07 14:05:15 · answer #5 · answered by rosie recipe 7 · 0⤊ 3⤋