LAFlOFà¸Ä¼$¼0è<îHÐ?ðÒAnswer: WhÌanswer1Ìanswer3„ÌWh1ÌtimeÐ?ðÊ@ÈÔHour/sÐ?ðÊ@ÈÔWatt/sÄ¼$¼0è<îHÐ?ðÒAnswer: %Ìanswer2„úòÌP2ÌT2Ð@Y7Ð?ðÊ@ÈÔTotal Watt-hour/sAÐ?ðÊ@ÈÔPortion Watt-hour/s?Ä
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„úòÌP3Ð@YÌT3Ð?ðÊ@ÈÔPercentage of Total Watt-hour/s_Ð?ðÊ@ÈÔTotal Watt-hour/scÄ$0¼(0$è,00î.0<Ð?ðÒAnswer: KW/KWhÌanswer4Ìanswer5òÌC4Ð@@}¼60Hè40TîF0`Ð?ðÒAnswer: W/Wh}„ƒÐ@@}sÐ?ðÊ@ÈÔ!KW/KWh (cancel to reverse input)ƒÐ?ðÊ@ÈÔW/Wh (cancel to reverse input)ƒÄ&@¼*@$è0@0î2@<Ð?ðÒAnswer: MW/MWhòÌC5Ð@@¼:@Hè8@Tw„¯Ð@@£Ð?ðÊ@ÈÔ!MW/MWh (cancel to reverse input)¯Ð?ðÊ@ÈÔ!KW/KWh (cancel to reverse input)¯îDP$Ð?ðÔâ„¹ï¸Ô•Watt is the unit ofÂ powerÂ (symbol: W).
The watt unit is named after James Watt, the inventor of the steam engine.
One watt is defined as the energy consumption rate of one joule per second.
1W = 1J / 1s
One watt is also defined as the current flow of one ampere with voltage of one volt.
1W = 1V Ã— 1A
Knowing the difference between a watt (W) and a watt-hour (Wh) helps you understand the impact of your home energy use on your electric bill.
While watts and watt-hours are related terms, they are not the same thing.
A watt (W) is a unit ofÂ power, and power is theÂ rateÂ at which energy is produced or consumed. Think of watts as a measure of electrical flow. Does an electrical device need a big flow or a small flow to work? For example, a 100 W light bulb uses energy at a higher rate than a 60 W bulb; this means that the 100 W light bulb needs a bigger â€œflowâ€ to work.
So what is a watt-hour?
A watt-hour (Wh) is a unit ofÂ energy; itâ€™s a way to measure theÂ amountÂ of work performed or generated. Household appliances and other electrical devices perform â€œworkâ€ and that requires energy in the form of electricity. Utilities typically charge you for electrical energy by the kilowatt-hour (kWh), which is equal to 1,000 watt-hours. Depending on your interconnection agreement, your utility may credit you for excess generation which will also be measured in kilowatt-hours.
So what is the difference?
In a nutshell, watt-hours measure amounts of energy for a specific period of time, and watts measure rates of power at a moment in time.
A common analogy for watts and watt-hours is speed and distance. Speed is a rate of how fast you drive at an instant in time (watts); distance is the length, or amount that you drive over a period of time (watt-hours). For example, if you drive at a constant rate of 60 miles per hour for one hour, then you will have traveled 60 miles.
Similarly, if a 60 W light bulb is on for one hour, then that light bulb will have used 60 Wh of energy. If left on for two hours, then the 60 W light bulb will have used 120Wh of energy.
So what?
Knowing about watts and watt-hours can give you a greater appreciation of the energy savings on your utility bills.
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REFERENCES
Retrieved from:
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