Difference between revisions of "Electrical Appliance"
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===Meaning=== | ===Meaning=== | ||
An '''electrical appliance''' is anything that needs [[electricity]] to work. | An '''electrical appliance''' is anything that needs [[electricity]] to work. | ||
+ | |||
+ | : Singular [[Noun]]: '''Electrical Appliance''' | ||
+ | : Plural [[Noun]]: '''Electrical Appliances''' | ||
+ | |||
+ | ===About Electrical Appliances=== | ||
+ | : '''Electrical appliances''' often have a plug to use the [[Mains Electricity]]. | ||
+ | : Some '''electrical appliances''' use [[Electrical Cell|electrical cells]] to power them. | ||
+ | |||
+ | ===Examples=== | ||
+ | {| class="wikitable" | ||
+ | |- | ||
+ | |[[File:KettleClipart.png|center|150px]] | ||
+ | |[[File:TVClipart.png|center|150px]] | ||
+ | |[[File:FridgeClipart.png|center|150px]] | ||
+ | |[[File:ToasterClipart.png|center|150px]] | ||
+ | |- | ||
+ | | style="height:20px; width:150px; text-align:center;" |Kettle | ||
+ | | style="height:20px; width:150px; text-align:center;" |Television | ||
+ | | style="height:20px; width:150px; text-align:center;" |Refrigerator | ||
+ | | style="height:20px; width:150px; text-align:center;" |Toaster | ||
+ | |- | ||
+ | |[[File:OvenClipart.png|center|150px]] | ||
+ | |[[File:MicrowaveClipart.png|center|150px]] | ||
+ | |[[File:WashingMachineClipart.png|center|150px]] | ||
+ | |[[File:HairDryerClipart.png|center|150px]] | ||
+ | |- | ||
+ | | style="height:20px; width:150px; text-align:center;" |Oven | ||
+ | | style="height:20px; width:150px; text-align:center;" |Microwave | ||
+ | | style="height:20px; width:150px; text-align:center;" |Washing Machine | ||
+ | | style="height:20px; width:150px; text-align:center;" |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 Cell|electrical cells]] to power them. | ||
+ | |||
+ | ===Power Ratings=== | ||
+ | {| class="wikitable" | ||
+ | |+ The Power ratings of some electrical appliances. | ||
+ | |- | ||
+ | |[[File:FilamentBulbClipart.png|center|50px]] | ||
+ | |[[File:EnergySavingBulbClipart.png|center|50px]] | ||
+ | |[[File:VacuumCleanerClipart.png|center|150px]] | ||
+ | |[[File:IronClipart.png|center|150px]] | ||
+ | |- | ||
+ | | style="height:20px; width:150px; text-align:center;" |Filament Bulb ~ 60[[Watt]]s | ||
+ | | style="height:20px; width:150px; text-align:center;" |Energy Saving Bulb ~ 25[[Watt]]s | ||
+ | | style="height:20px; width:150px; text-align:center;" |Vacuum Cleaner ~ 800[[Watt]]s | ||
+ | | style="height:20px; width:150px; text-align:center;" |Iron ~ 1100[[Watt]]s | ||
+ | |- | ||
+ | |[[File:KettleClipart.png|center|150px]] | ||
+ | |[[File:TVClipart.png|center|150px]] | ||
+ | |[[File:FridgeClipart.png|center|150px]] | ||
+ | |[[File:ToasterClipart.png|center|150px]] | ||
+ | |- | ||
+ | | style="height:20px; width:150px; text-align:center;" |Kettle ~ 2000[[Watt]]s | ||
+ | | style="height:20px; width:150px; text-align:center;" |Television ~ 250[[Watt]]s | ||
+ | | style="height:20px; width:150px; text-align:center;" |Refrigerator ~ 200[[Watt]]s | ||
+ | | style="height:20px; width:150px; text-align:center;" |Toaster ~ 1500[[Watt]]s | ||
+ | |- | ||
+ | |[[File:OvenClipart.png|center|150px]] | ||
+ | |[[File:MicrowaveClipart.png|center|150px]] | ||
+ | |[[File:WashingMachineClipart.png|center|150px]] | ||
+ | |[[File:HairDryerClipart.png|center|150px]] | ||
+ | |- | ||
+ | | style="height:20px; width:150px; text-align:center;" |Oven ~ 2500[[Watt]]s | ||
+ | | style="height:20px; width:150px; text-align:center;" |Microwave ~ 1000[[Watt]]s | ||
+ | | style="height:20px; width:150px; text-align:center;" |Washing Machine ~ 2500[[Watt]]s | ||
+ | | style="height:20px; width:150px; text-align:center;" |Hair Dryer ~ 600[[Watt]]s | ||
+ | |} | ||
+ | |||
+ | ===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-hour]]s. This means all [[power]] ratings need to be in [[kilowatt]]s and time should be in [[hour]]s. | ||
+ | : [[Energy]] can be calculated with the equation: [[Energy]] = [[Power]] x [[time]] | ||
+ | |||
+ | {| class="wikitable" | ||
+ | |+ The Power ratings of some electrical appliances. | ||
+ | |- | ||
+ | | style="height:20px; width:250px; text-align:center;" |'''Filament Bulb''' | ||
+ | A 60[[Watt]] filament bulb may be used for 8 hours a day. Calculate the [[energy]] in kilowatt-hours. | ||
+ | | style="height:20px; width:250px; text-align:center;" |'''Energy Saving Bulb''' | ||
+ | A 25[[Watt]] energy saving bulb may be used for 8 hours a day. Calculate the [[energy]] in kilowatt-hours. | ||
+ | | style="height:20px; width:250px; text-align:center;" |'''Kettle''' | ||
+ | A 2000[[Watt]] kettle may be used for 30 minutes a day. Calculate the [[energy]] in kilowatt-hours. | ||
+ | |- | ||
+ | | style="height:20px; width:250px; text-align:left;" | | ||
+ | : Power = 60W = 0.060kW | ||
+ | : Time = 8 hours | ||
+ | : Energy = Power x time | ||
+ | : Energy = 0.060 x 8 | ||
+ | : Energy = 0.48kilowatt-hours | ||
+ | |||
+ | | style="height:20px; width:250px; text-align:left;" | | ||
+ | : Power = 25W = 0.025kW | ||
+ | : Time = 8 hours | ||
+ | : Energy = Power x time | ||
+ | : Energy = 0.025 x 8 | ||
+ | : Energy = 0.20kilowatt-hours | ||
+ | |||
+ | | style="height:20px; width:250px; text-align:left;" | | ||
+ | : Power = 2000W = 2.0kW | ||
+ | : Time = 30 minutes = 0.5hours | ||
+ | : Energy = Power x time | ||
+ | : Energy = 2.0 x 0.5 | ||
+ | : Energy = 1.0kilowatt-hours | ||
+ | |- | ||
+ | | style="height:20px; width:250px; text-align:center;" |'''Television''' | ||
+ | A 250[[Watt]] television is left on for 3 hours each day. Calculate the [[energy]] in kilowatt-hours. | ||
+ | | style="height:20px; width:250px; text-align:center;" |'''Refrigerator''' | ||
+ | A 200[[Watt]] refrigerator is on for 24 hours each day. Calculate the [[energy]] in kilowatt-hours. | ||
+ | | style="height:20px; width:250px; text-align:center;" |'''Oven''' | ||
+ | A 2500[[Watt]] oven is used for 45 minutes each day. Calculate the [[energy]] in kilowatt-hours. | ||
+ | |- | ||
+ | | style="height:20px; width:250px; text-align:left;" | | ||
+ | : Power = 250W = 0.25kW | ||
+ | : Time = 3 hours | ||
+ | : Energy = Power x time | ||
+ | : Energy = 0.25 x 3 | ||
+ | : Energy = 0.75kilowatt-hours | ||
+ | |||
+ | | style="height:20px; width:250px; text-align:left;" | | ||
+ | : Power = 200W = 0.20kW | ||
+ | : Time = 24 hours | ||
+ | : Energy = Power x time | ||
+ | : Energy = 0.20 x 24 | ||
+ | : Energy = 4.8kilowatt-hours | ||
+ | |||
+ | | style="height:20px; width:250px; text-align:left;" | | ||
+ | : Power = 2500W = 2.5kW | ||
+ | : Time = 45 minutes = 0.75 hours | ||
+ | : Energy = Power x time | ||
+ | : Energy = 2.5 x 0.75 | ||
+ | : Energy = 1.875kilowatt-hours | ||
+ | |} | ||
+ | |||
+ | ==Key Stage 4== | ||
+ | ===Meaning=== | ||
+ | An '''electrical appliance''' is any device that needs [[electricity]] to work. | ||
+ | |||
+ | ===About Electrical Appliances=== | ||
+ | : '''Electrical appliances''' often have a [[Electrical Plug|plug]] to use the [[Mains Electricity]]. | ||
+ | : Some '''electrical appliances''' use [[Electrical Cell|electrical cells]] to power them. | ||
+ | |||
+ | ===Energy Transfers=== | ||
+ | {| class="wikitable" | ||
+ | |+ [[Energy]] is always [[Energy Transfer|transferred]] to the appliances by [[electricity]]. | ||
+ | |- | ||
+ | |[[File:FilamentBulbClipart.png|center|50px]] | ||
+ | |[[File:EnergySavingBulbClipart.png|center|50px]] | ||
+ | |[[File:VacuumCleanerClipart.png|center|150px]] | ||
+ | |[[File:IronClipart.png|center|150px]] | ||
+ | |- | ||
+ | | style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the [[Electrical Bulb|bulb]]. | ||
+ | | style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the [[Electrical Bulb|bulb]]. | ||
+ | | style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Kinetic Energy Store]] of the [[air]] and the [[Thermal Energy Store]] of the [[motor]]. | ||
+ | | style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the [[metal]] pad. | ||
+ | |- | ||
+ | |[[File:KettleClipart.png|center|150px]] | ||
+ | |[[File:TVClipart.png|center|150px]] | ||
+ | |[[File:FridgeClipart.png|center|150px]] | ||
+ | |[[File:ToasterClipart.png|center|150px]] | ||
+ | |- | ||
+ | | style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the [[water]] and kettle. | ||
+ | | style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Radiation|Energy Transfer by radiation]] to the surroundings (by [[light]] and [[sound]]). | ||
+ | | style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the 'heat pump' at the back of the refrigerator. | ||
+ | | style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the bread/toast. | ||
+ | |- | ||
+ | |[[File:OvenClipart.png|center|150px]] | ||
+ | |[[File:MicrowaveClipart.png|center|150px]] | ||
+ | |[[File:WashingMachineClipart.png|center|150px]] | ||
+ | |[[File:HairDryerClipart.png|center|150px]] | ||
+ | |- | ||
+ | | style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the oven and food. | ||
+ | | style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the food. | ||
+ | | style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] of the [[Electrical Bulb|bulb]]. | ||
+ | | style="height:20px; width:150px; text-align:center;" |[[Electricity|Electrical energy transfer]] → [[Thermal Energy Store]] and [[Kinetic Energy Store]] of the [[air]]. | ||
+ | |} | ||
+ | |||
+ | |||
+ | ===References=== | ||
+ | ====AQA==== | ||
+ | |||
+ | :[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. |
|
|
|
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. |
|
|
|
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. |