Difference between revisions of "Electrical Appliance"
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| style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] and [[Kinetic Energy Store]] of the [[air]]. | | style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] and [[Kinetic Energy Store]] of the [[air]]. | ||
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+ | ===References=== | ||
+ | ====AQA==== | ||
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+ | :[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Electrical appliances, pages 18-21, 72-73, GCSE Physics; Third Edition, Oxford University Press, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1471851354/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851354&linkCode=as2&tag=nrjc-21&linkId=9012a0d354024419214fb3ad5ac44ba0 ''Electrical appliances, power of, pages 307-8, GCSE Combined Science Trilogy 1, Hodder, AQA ''] |
Latest revision as of 10:39, 4 November 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
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. This means all power ratings need to be in kilowatts and time should be in hours.
- Energy can be calculated with the equation: Energy = Power 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
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. |
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. |
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. |