Difference between revisions of "Electrical Conductor"
Line 54: | Line 54: | ||
| style="height:20px; width:200px; text-align:center;" |A [[Circuit Diagram|circuit diagram]] showing how to find the [[Electrical Resistance|resistance]] of an unknown [[Electrical Component|component]]. | | style="height:20px; width:200px; text-align:center;" |A [[Circuit Diagram|circuit diagram]] showing how to find the [[Electrical Resistance|resistance]] of an unknown [[Electrical Component|component]]. | ||
|} | |} | ||
+ | |||
+ | ===References=== | ||
+ | ====AQA==== | ||
+ | |||
+ | :[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Conductor (electrical), page 48, GCSE Physics; Student Book, Collins, AQA ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Conductors; electrical, page 99, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA ''] |
Revision as of 15:11, 3 November 2019
Contents
Key Stage 2
Meaning
An electrical conductor is a material that allows electricity to flow through it easily.
- Singular Noun: Electrical conductor
- Plural Noun: Electrical conductors
- Verb: To electrically conduct
- Adjective: Electrically conductive
About Electrical Conductors
Metal is a good electrical conductor. | Salty water is an electrical conductor. |
Key Stage 3
Meaning
An electrical conductor is a material with a very low resistance to the flow of electricity.
About Electrical Conductors
- Metal elements are good electrical conductors.
- Metals make good conductors because they have free electrons that can move around the metal.
- Non-metal elements are usually poor electrical conductors. Carbon in the form of graphite is an exception to this.
- Salts that are molten or dissolved in water are electrical conductors.
- Salts make good conductors when the ions are free to move through the substance.
- To determine if an object is a good electrical conductor the object can be added to a circuit. If a current flows then it is a good conductor.
- To compare the conductivity of different objects an ammeter can be added to the circuit. The higher the current the better the object is at conducting.
Key Stage 4
Meaning
An electrical conductor is a material with a very low resistance to the flow of electricity.
About Electrical Conductors
- Metal elements are good electrical conductors.
- Metals make good conductors due to the metallic bonds in which a sea delocalised electrons is free to move past a lattice of positive metal ions.
- Non-metal elements are usually poor electrical conductors as electrons are not free to move from one atom to another. Carbon in the form of graphite is an exception to this.
- Salts that are molten or dissolved in water are electrical conductors.
- Salts make good conductors when the ions are free to move through the substance.
- To determine if an object is a good electrical conductor the object can be added to a circuit. If the ratio of potential difference to current is low then it is a good conductor.
- To compare the conductivity of components in a circuit an ammeter can be added in series with the component and a voltmeter in parallel to the component. The smaller the resistance the better the object is at conducting.
A circuit diagram showing how to find the resistance of an unknown component. |