through the element. How much energy is used up during a period of 5 hours by the element?
A. 352 Wh
B. 550 Wh
C. 1760 Wh
D. 2580 Wh
2006-07-10 11:25:42 · 9 answers · asked by Andrea 3 in Science & Mathematics ➔ Physics
c 1760
2006-07-10 11:31:27 · answer #1 · answered by catshuffpaint 1 · 8⤊ 1⤋
There is enough information. An electric heating element is a resistive load so the power factor is 1.
V * A* T == 110 *3.5 *5 =1760 >> C is the correct answer.
If the voltage is DC there is no question. If the voltage is AC then, unless other wise specified, the RMS or heating value is implied. This would be the DC equivelent voltage. The Peak AC value for 110v AC RMS value is about 156 volts.
2006-07-10 12:31:01 · answer #2 · answered by laughter_n_more 2 · 1⤊ 0⤋
Well, power = current x voltage = 3.2 x 110 = 352watts
energy = power x time = 352 x (5x60) = 105600 Joules
I don't know what the unit is that you have used the Wh for. That is not a unit I am aware of for measuring of energy
2006-07-10 11:30:29 · answer #3 · answered by Showaddywaddy 5 · 1⤊ 0⤋
volts times amps times hours = wh A
2006-07-10 11:30:36 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Not enough Info.
Is that AC or DC.
If AC, what is the power factor.
There is a difference.
2006-07-10 11:53:13 · answer #5 · answered by protoham 6 · 0⤊ 0⤋
Give Catstuufpant a cupee doll, she says it is answer C.
Yours: Grumpy
2006-07-10 11:55:39 · answer #6 · answered by Grumpy 6 · 0⤊ 0⤋
laughter_n_more has it exactly right. 110v means RMS, heating element is resistive, power factor is 1
2006-07-10 19:33:29 · answer #7 · answered by gp4rts 7 · 0⤊ 0⤋
I don t know what it is but I do know that it s not 352 wh.
2015-06-08 11:10:31 · answer #8 · answered by Brandy 1 · 0⤊ 0⤋
b
2016-03-27 00:09:32 · answer #9 · answered by Anonymous · 0⤊ 0⤋