2006-11-24 06:36:09 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
P = U*I
I= U/R
thus P = U*U/R = 200*200/10 = 4000 Watt
2006-11-24 06:38:38 · answer #1 · answered by gjmb1960 7 · 0⤊ 0⤋
you need two formula as you cant get power(measured in watts) from resistance and voltage you need to find out current (measured in amps) first.
current = voltage/resistance 200/10 = 20 amps
power = current squared x resistance 20 x 20 x 10 = 4000 watts or
power = current x voltage 20 x 200 = 4000 watts
2006-11-25 03:39:11 · answer #2 · answered by saltydog 2 · 0⤊ 0⤋
In physics always start by listing your known values as well as determining which formulas will be useful. Here, your useful formula is V=I*R. I=?, R=10 ohms and V=120V. Rearrange your formula to get I = V/R, plug in your values and your answer should be d) 12 A
2016-05-22 22:41:30 · answer #3 · answered by Stephanie 4 · 0⤊ 0⤋
p=current * current * resistance
V = I * R
I = 200 / 10 = 20 amperes
power = 20 * 20 * 10 = 4000 watt ( correct answer) ;)
2006-11-24 07:20:03 · answer #4 · answered by Anonymous · 0⤊ 0⤋
v^2/r = 200 * 200 / 10 = 20 * 200 = 4 kW
2006-11-24 06:41:27 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Ohms Law
I = E/R
Answer 20 Amps
2006-11-25 03:17:23 · answer #6 · answered by Anonymous · 0⤊ 0⤋
P=V^2 /R = 200 * 200 /10 =4000W or 4Kw
2006-11-26 00:23:49 · answer #7 · answered by Sam 4 · 0⤊ 0⤋
P=V.I
I=V/R
Therefore P=V2/R
(200x200)/10
4000 Watts
2006-11-27 08:12:48 · answer #8 · answered by Mark G 2 · 0⤊ 0⤋
I = V/R = 200/10 = 20A
2006-11-24 06:52:36 · answer #9 · answered by lulu 6 · 0⤊ 0⤋
4,000 watts or 4 kilowatts!!!(is the same)
2006-11-24 11:31:15 · answer #10 · answered by The Apostle 2 · 0⤊ 0⤋