Difference between revisions of "Electrical Heater"
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: [[Energy]] is [[Energy Transfer|transferred]] into the [[Thermal Energy Store|thermal energy store]] of the '''heater'''. | : [[Energy]] is [[Energy Transfer|transferred]] into the [[Thermal Energy Store|thermal energy store]] of the '''heater'''. | ||
: [[Energy]] is [[Energy Transfer|transferred]] by [[Thermal Conduction|thermal conduction]], [[convection]] and by [[radiation]] to the [[Thermal Energy Store|thermal energy store]] of the surroundings. | : [[Energy]] is [[Energy Transfer|transferred]] by [[Thermal Conduction|thermal conduction]], [[convection]] and by [[radiation]] to the [[Thermal Energy Store|thermal energy store]] of the surroundings. | ||
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+ | ===References=== | ||
+ | ====OCR==== | ||
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+ | :[https://www.amazon.co.uk/gp/product/1782945679/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945679&linkCode=as2&tag=nrjc-21&linkId=a2db42f7b4bdf10cafaafa3bb9120940 ''Electrical heaters, page 105, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR ''] |
Latest revision as of 03:33, 5 December 2019
Contents
Key Stage 4
Meaning
A heater is a component in a circuit which is heated when a current goes through it.
About Electrical Heaters
- Heaters are usually long lengths of wire which a high resistance.
- As a current passes through a wire electrons in the current collide with ions in the metal lattice causing them to vibrate. This increases the temperature of the wire.
Energy Transfers
- In an electrical heater electrical work is done to heat an object or the surroundings.
- Energy is transferred into the thermal energy store of the heater.
- Energy is transferred by thermal conduction, convection and by radiation to the thermal energy store of the surroundings.