19,916
edits
Changes
→Key Stage 3
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==Key Stage 34==
===Meaning===
[[File:DCMotor.png|right|300px|thumb|A typical [[D.C. Motor]].]]
| style="height:20px; width:200px; text-align:left;" |In a '''D.C. Motor''' there is one or more coils of [[wire]] in the [[Magnetic Field|magnetic field]]. The [[Electrical Current|current]] through one part of the [[wire]] causes it to move in the opposite direction to the other side of the [[wire]]. This causes the coil to spin.
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: A '''D.C. Motor''' has a split ring which means that when the coil has made a half rotation the [[Electrical Current|current]] through the coil changes direction so that the [[Electrical Current|current]] always goes in the same direction in the left part of the coil and always goes in the same direction on the right part of the coil.
: The [[force]] that can be applied by the '''motor''' depends upon:
:*The number of coils of [[wire]] - Double the coils, double the [[force]].
|[[File:ElectricMotor.gif|center]]
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| style="height:20px; width:200px; text-align:center;" |A [[D.C. Motor]] spinning due to a [[Electrical Current|current]] passing through the [[electromagnet]]s. It can be seen that when the coil has made a half rotation the [[Electrical Current|current]] through the coil changes direction so that the the left hand side is always .
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