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Magnet

1,817 bytes added, 08:46, 4 March 2019
Key Stage 3
===Meaning===
A '''magnet''' is an object that [[attract]]s [[Iron]], [[Cobalt]] or [[Nickel]].
 
===About Magnets===
: There are three types of [[magnet]] you should know:
*[[Permanent Magnet]]s - These are [[magnet]]s which have a permanent [[Magnetic Field|magnetic field]] which needs [[energy]] to be removed.
*[[Induced Magnet]]s - These are [[Magnetic Material|magnetic materials]] which only become [[magnet]]s when they are in the [[Magnetic Field|magnetic field]] of another [[magnet]].
*[[Electromagnet]]s - These are a coil of wire wrapped around a [[Soft Iron|soft iron]] core. They only become [[magnet]]s when there is a [[Electrical Current|current]] passed through the coil of wire.
: '''Magnets''' are [[attract]]ed to some [[metal]]s ([[Cobalt]], [[Nickel]] and [[Iron]]). Those [[metal]]s are '''magnetic''' but they are not [[magnet]]s themselves.
: '''Magnets''' have two [[poles]]; North and South.
: When two North [[Poles]] are placed next to each other two '''magnets''' will [[repel]] each other.
: When two South [[Poles]] are placed next to each other two '''magnets''' will [[repel]] each other.
: When the North [[Poles|Pole]] of one '''magnet''' is placed next to the South [[Poles|Pole]] of another '''magnet''' they [[attract]] each other.
: All [[magnet]]s have a [[Magnetic Field|magnetic field]] around them which influences other [[Magnetic Material|magnetic materials]].
 
===Examples===
{| class="wikitable"
|-
|[[File:MagneticFieldLines.png|center|300px]]
|[[File:MagneticFieldLinesElectromagnet.png|center|300px]]
|-
| style="height:20px; width:200px; text-align:center;" |The [[Bar Magnet|bar magnet]] is a [[Permanent Magnet|permanent magnet]].
| style="height:20px; width:200px; text-align:center;" |This is a [[diagram]] of an [[electromagnet]].
|}
 
==Key Stage 4==
===Meaning===
A '''magnet''' is an [[object]] that produces its own [[Magnetic Field|magnetic field]].
===About Magnets===