Electrical Power & Energy Chapter 7-3. Electrical Power F Power is the rate at which work is done F...
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Transcript of Electrical Power & Energy Chapter 7-3. Electrical Power F Power is the rate at which work is done F...
![Page 1: Electrical Power & Energy Chapter 7-3. Electrical Power F Power is the rate at which work is done F Electrical energy is easily converted into other forms.](https://reader035.fdocuments.net/reader035/viewer/2022072016/56649efc5503460f94c0efeb/html5/thumbnails/1.jpg)
Electrical Power & Energy
Chapter 7-3
![Page 2: Electrical Power & Energy Chapter 7-3. Electrical Power F Power is the rate at which work is done F Electrical energy is easily converted into other forms.](https://reader035.fdocuments.net/reader035/viewer/2022072016/56649efc5503460f94c0efeb/html5/thumbnails/2.jpg)
Electrical PowerPower is the rate at which work
is doneElectrical energy is easily
converted into other forms of energy–Mechanical-Fans blades–Thermal-Hair dryer
![Page 3: Electrical Power & Energy Chapter 7-3. Electrical Power F Power is the rate at which work is done F Electrical energy is easily converted into other forms.](https://reader035.fdocuments.net/reader035/viewer/2022072016/56649efc5503460f94c0efeb/html5/thumbnails/3.jpg)
Electrical Power is the rate at which electrical energy is converted into other forms of energy
![Page 4: Electrical Power & Energy Chapter 7-3. Electrical Power F Power is the rate at which work is done F Electrical energy is easily converted into other forms.](https://reader035.fdocuments.net/reader035/viewer/2022072016/56649efc5503460f94c0efeb/html5/thumbnails/4.jpg)
Power = current X voltage
Units of Watts (W) or kilowatts (kW)
IVP *
![Page 5: Electrical Power & Energy Chapter 7-3. Electrical Power F Power is the rate at which work is done F Electrical energy is easily converted into other forms.](https://reader035.fdocuments.net/reader035/viewer/2022072016/56649efc5503460f94c0efeb/html5/thumbnails/5.jpg)
Electrical EnergyThe amount of electrical
energy used depends on the power required by the appliance and the length of time the appliance is used.
![Page 6: Electrical Power & Energy Chapter 7-3. Electrical Power F Power is the rate at which work is done F Electrical energy is easily converted into other forms.](https://reader035.fdocuments.net/reader035/viewer/2022072016/56649efc5503460f94c0efeb/html5/thumbnails/6.jpg)
Energy = power X timeE = PtUnits of kilowatt-hour (kWh)
![Page 7: Electrical Power & Energy Chapter 7-3. Electrical Power F Power is the rate at which work is done F Electrical energy is easily converted into other forms.](https://reader035.fdocuments.net/reader035/viewer/2022072016/56649efc5503460f94c0efeb/html5/thumbnails/7.jpg)
Cost of Using Electrical Energy
Multiplying the electrical energy used by the amount of the power company charges for each kWh.
Total cost=Power*time*cost $=kW*hr*cost