Difference between revisions of "Electrical Conductor"
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|[[Brine|Salty water]] is an '''electrical conductor'''. | |[[Brine|Salty water]] is an '''electrical conductor'''. | ||
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| + | ==Key Stage 3== | ||
| + | ===Meaning=== | ||
| + | An '''electrical conductor''' is a [[material]] with a very low [[Electrical Resistance|Resistance]] to the flow of [[electricity]]. | ||
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| + | ===About Electrical Conductors=== | ||
| + | : [[Metal]] [[element]]s are good '''electrical conductors'''. | ||
| + | : [[Metal]]s make good '''conductors''' because they have [[Delocalised Electrons|free electrons]] that can move around the [[metal]]. | ||
| + | : [[Non-metal]] [[element]]s are usually poor '''electrical conductors'''. [[Carbon]] in the form of [[graphite]] is an exception to this. | ||
| + | : [[Salt]]s that are [[molten]] or [[dissolve]]d in [[water]] are '''electrical conductors'''. | ||
| + | : [[Salt]]s make good '''conductors''' when the [[ion]]s 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 [[Electrical Current|current]] flows then it is a good '''conductor'''. | ||
| + | : To compare the '''[[Electrical Conductivity|conductivity]]''' of different [[object]]s an [[ammeter]] can be added to the [[circuit]]. The higher the [[Electrical Current|current]] the better the [[object]] is at [[conducting]]. | ||
Revision as of 12:43, 26 October 2018
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.