Difference between revisions of "Electrical Appliance"
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| style="height:20px; width:200px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the [[water]] and kettle. | | style="height:20px; width:200px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the [[water]] and kettle. | ||
| style="height:20px; width:200px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Radiation|Energy Transfer by radiation]] to the surroundings (by [[light]] and [[sound]]). | | style="height:20px; width:200px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Radiation|Energy Transfer by radiation]] to the surroundings (by [[light]] and [[sound]]). | ||
| − | | style="height:20px; width:200px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the 'heat pump' at the back of the | + | | style="height:20px; width:200px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the 'heat pump' at the back of the refrigerator. |
| style="height:20px; width:200px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the bread/toast. | | style="height:20px; width:200px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the bread/toast. | ||
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Revision as of 19:17, 8 April 2019
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
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| Kettle | Television | Refrigerator | Toaster |
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| 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
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| Filament Bulb ~ 60Watts | Energy Saving Bulb ~ 25Watts | Vacuum Cleaner ~ 800Watts | Iron ~ 1100Watts |
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| Kettle ~ 2000Watts | Television ~ 250Watts | Refrigerator ~ 200Watts | Toaster ~ 1500Watts |
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| 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. This means all power ratings need to be in kilowatts and time should be in hours.
- Energy can be calculated with the equation: Power = Energy x time
| 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. |
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| 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 oven is used for 45 minutes each day. Calculate the energy in kilowatt-hours. |
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Key Stage 4
Meaning
An electrical appliance is any device 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.
Energy Transfers
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| Electrical energy transfer → Thermal Energy Store of the bulb. | Electrical energy transfer → Thermal Energy Store of the bulb. | Electrical energy transfer → Kinetic Energy Store of the air and the Thermal Energy Store of the motor. | Electrical energy transfer → Thermal Energy Store of the metal pad. |
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| Electrical energy transfer → Thermal Energy Store of the water and kettle. | Electrical energy transfer → Energy Transfer by radiation to the surroundings (by light and sound). | Electrical energy transfer → Thermal Energy Store of the 'heat pump' at the back of the refrigerator. | Electrical energy transfer → Thermal Energy Store of the bread/toast. |
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| Electrical energy transfer → Thermal Energy Store of the oven and food. | Electrical energy transfer → Thermal Energy Store of the food. | Electrical energy transfer → Thermal Energy Store of the bulb. | Electrical energy transfer → Thermal Energy Store and Kinetic Energy Store of the air. |