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*The more coils of wire the stronger the [[electromagnet]].
*The greater the [[Electrical Current|current]] through the [[wire]] the stronger the [[electromagnet]].
*The more easily [[Magnetise|magnetised]] the [[Soft Iron|soft iron]] core, the stronger the [[electromagnet]].
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|[[File:MagneticFieldLinesElectromagnet.png|center|400px]]
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| style="height:20px; width:200px; text-align:center;" |The direction of the [[Magnetic Field|magnetic field]] can be changed by changing the direction of the [[Electrical Current|current]].
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===Compared to a Bar Magnet===
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| style="height:20px; width:300px; text-align:center;" |'''Advantages of an Electromagnet over a Bar Magnet'''
| style="height:20px; width:300px; text-align:center;" |'''Disadvantages of an Electromagnet compared to a Bar Magnet'''
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| style="height:20px; width:300px; text-align:left;" |
Changing the [[Electrical Current|current]] can change the strength of an [[electromagnet]].
An [[electromagnet]] can be turned on an off by turning the [[Electrical Current|current]] on and off.
The direction of the [[Magnetic Field|magnetic field]] can be changed in an [[electromagnet]] by changing the direction of the [[Electrical Current|current]].
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[[Electromagnet]]s require a source of power to work.
[[Electromagnet]]s increase in [[temperature]] as they are used.
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==Key Stage 4==
===Meaning===
An [[electromagnet]] is a [[magnet]] made from a [[solenoid]] and a [[Soft Iron|soft iron]] core.
===About Electromagnets===
: [[Electromagnet]]s only work when there is a [[Direct Current|direct current]] passing through the [[solenoid]]
: An [[electromagnet]] can be turned off and on.
: The strength of an [[electromagnet]] depends on; the number of coils of [[wire]] in the [[solenoid]], the [[Electrical Current|current]] through the [[solenoid]] and how easily the [[Soft Iron|soft iron]] core can be [[Magnetise|magnetised]].
*The more coils of [[wire]] in the [[solenoid]] the stronger the [[electromagnet]].
*The greater the [[Electrical Current|current]] through the [[solenoid]] the stronger the [[electromagnet]].
*The more easily [[Magnetise|magnetised]] the [[Soft Iron|soft iron]] core, the stronger the [[electromagnet]].