2007-11-19 03:27:43 · 5 answers · asked by hudi 1 in Science & Mathematics ➔ Physics
Kilowatts x hours
4 devices at 500 watts each = 2000 watts consumed (or 2 Kw)
over 10 hours = 2Kw x 10 H = 20 KWh
duh?!?! Time to study more, stop procrastinating and do your own homework.
2007-11-19 03:38:29 · answer #1 · answered by Dave C 7 · 0⤊ 0⤋
1st of all if there are problems that you really don't know think what really are asking to, if there are units given sometimes you only have to analyze the units to obtain the answer..
so kw -hr
500 w x 1kw/1000 w = .5kw
so .5kw x 10 hr = 5 Kw -hr
then multiply it to the no of appliances or devices that you used
so 5 kw - hr x 4 = 20 kw - hr total
2007-11-19 11:41:06 · answer #2 · answered by J-weak 2 · 0⤊ 0⤋
10 * 4 * 500 / 1000
2007-11-19 11:30:47 · answer #3 · answered by Anonymous · 0⤊ 0⤋
4 * 500 = 2KW
2 * 10 = 20 KWH
2007-11-19 11:32:25 · answer #4 · answered by Mike C 6 · 0⤊ 0⤋
500 watts= 0.5KW
4 x .5 x10=20Kwh
2007-11-19 11:34:45 · answer #5 · answered by Anonymous · 0⤊ 0⤋