does it mean when the appliance works for 24 hours, it used 400 watts of electricity?
2007-04-17 17:37:25 · 5 answers · asked by ccruz_md 2 in Science & Mathematics ➔ Engineering
You have plenty of wrong answers, The 400 watts means, that this device when operating at full capacity will use 400 watts of electricty each hour. If you use it for 30 minutes it will consume 200 watts of electricty (you buy electricity by the 1000 watt measure or kilo watt). A 100 watt light bulb uses 100 watts of electricity each hour. So when it says 400 watts it really means 400 watts per hour.
2007-04-17 20:36:08 · answer #1 · answered by Anonymous · 0⤊ 0⤋
It means that the device consumes 400 Watts of electricity power. This value is not related to time.
During 24-hour time frame it consumes
400 Watts * 24 Hours = 9600 Watt*Hour
2007-04-17 18:58:39 · answer #2 · answered by Anonymous · 1⤊ 0⤋
It means that it does work (or consumes energy) at the rate of 400 Joules per second. Power is the rate at which energy is consumed (or used) which is the reason that your electric bill is in 'killowatt hours'. If you use 1 kw for one hour or 100 watts for 10 hours, you've used the same total amount of energy, and that's what you're charged for.
HTH
Doug
2007-04-17 18:51:04 · answer #3 · answered by doug_donaghue 7 · 0⤊ 0⤋
It consumes 400 watts to power it at it's maximum capacity. All appliances consume less than their maximum rated consumption unless it is rated wrong.
2007-04-17 17:41:07 · answer #4 · answered by Anonymous · 0⤊ 0⤋
400 watts- indicates tat the device will consume 400watts when operated for an hour.
and it requires a source tat can provide the sufficient amount of power for it to operate
2007-04-18 06:37:42 · answer #5 · answered by missy_ng 2 · 0⤊ 0⤋