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Conductors and Insulators
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What is resistance?Measure of how difficult it is for electricity
(electrons) to flow
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4 factors that determine resistance
The material you use
The length the electricity has to flow
The diameter of the wire
The temperature of the material
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Reducing the resistance does what to the current?
Increases the current
Reduce the resistance, increases the current.
Reduce the resistance making it easier for the electricity to flow..
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Path of least resistanceElectricity will ALWAYS take the easiest possible
path.
You must be careful because through your body may be the path of least resistance.
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Electric current flow through everything?
NO WAY!!!!
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What are conductors?Materials that transfer electrons easily
Allows electrons to flow easily
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Electrons in conductorsElectrons are loosely bound to their atoms.
Electrons move freely throughout the material
When electrons can move easily, they can flow, allowing electric current
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Examples of conductorsSpoon
Wire
Metal
Copper
Aluminum
Gold
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How does electricity get to a lamp so fast?
Electrons are already there, they just needed a push.
When the switch is flipped electrons start flowing
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What are insulators?Material which electrons cannot flow easily
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Electrons in an insulatorElectrons are bound tightly to their atoms
Electrons do not move easily
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Why the rubber coating?Rubber acts as an insulator stopping the flow of
electrons to your hand
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