Difference between revisions of "Electrical Appliance"
(→Energy Usage of Appliances) |
(→Energy Usage of Appliances) |
||
| Line 113: | Line 113: | ||
|- | |- | ||
| style="height:20px; width:200px; text-align:center;" |'''Television''' | | style="height:20px; width:200px; text-align:center;" |'''Television''' | ||
| − | A 250[[Watt]] television is left on for 3 hours each day. | + | A 250[[Watt]] television is left on for 3 hours each day. Calculate the [[energy]] in kilowatt-hours. |
| style="height:20px; width:200px; text-align:center;" |'''Refrigerator''' | | style="height:20px; width:200px; text-align:center;" |'''Refrigerator''' | ||
| − | A 200[[Watt]] refrigerator is on for 24 hours each day. | + | A 200[[Watt]] refrigerator is on for 24 hours each day. Calculate the [[energy]] in kilowatt-hours. |
| style="height:20px; width:200px; text-align:center;" |'''Oven''' | | style="height:20px; width:200px; text-align:center;" |'''Oven''' | ||
| − | A 2500[[Watt]] television is left on for 45 minutes each day. | + | A 2500[[Watt]] television is left on for 45 minutes each day. Calculate the [[energy]] in kilowatt-hours. |
|- | |- | ||
| style="height:20px; width:200px; text-align:left;" | | | style="height:20px; width:200px; text-align:left;" | | ||
Revision as of 18:04, 7 October 2018
Contents
Key Stage 2
Meaning
An electrical appliance is anything that needs electricity to work.
About Electrical Appliances
- Electrical appliances often have a plug to use the Mains Electricity.
- Some electrical appliances use electrical cells to power them.
Examples
 |
 |
 |
 |
| Kettle | Television | Refrigerator | Toaster |
 |
 |
 |
 |
| Oven | Microwave | Washing Machine | Hair Dryer |
Key Stage 3
Meaning
An electrical appliance is anything that needs electricity to work.
About Electrical Appliances
- Electrical appliances often have a plug to use the Mains Electricity.
- Some electrical appliances use electrical cells to power them.
Power Ratings
 |
 |
 |
 |
| Filament Bulb ~ 60Watts | Energy Saving Bulb ~ 25Watts | Vacuum Cleaner ~ 800Watts | Iron ~ 1100Watts |
|
|
|
|
| Kettle ~ 2000Watts | Television ~ 250Watts | Refrigerator ~ 200Watts | Toaster ~ 1500Watts |
|
|
|
|
| Oven ~ 2500Watts | Microwave ~ 1000Watts | Washing Machine ~ 2500Watts | Hair Dryer ~ 600Watts |
Energy Usage of Appliances
- The amount of energy an appliance uses depends on the power rating and how long the appliance is used for.
- Energy usage for appliances is measured in kilowatt-hours.
| Filament Bulb
A 60Watt filament bulb may be used for 8 hours a day. Calculate the energy in kilowatt-hours. |
Energy Saving Bulb
A 25Watt energy saving bulb may be used for 8 hours a day. Calculate the energy in kilowatt-hours. |
Kettle
A 2000Watt kettle may be used for 30 minutes a day. Calculate the energy in kilowatt-hours. |
|
|
|
| Television
A 250Watt television is left on for 3 hours each day. Calculate the energy in kilowatt-hours. |
Refrigerator
A 200Watt refrigerator is on for 24 hours each day. Calculate the energy in kilowatt-hours. |
Oven
A 2500Watt television is left on for 45 minutes each day. Calculate the energy in kilowatt-hours. |
|
|
|