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current and resistance of a wire and the affects when the length changes
Essay specific features
Written by:
Kelly L
Date added:
October 10, 2014
Level:
University
Grade:
A
No of pages / words:
3 / 719
Was viewed:
1560 times
Rating of current essay:
Essay content:
Voltage is the push given to the current. The current has to go through a circuit, which contains resistance so if you increase that push you also increase the flow of the current. All materials have a slight resistance to electricity factors affecting the resistance are: Length, Voltage & Temperature and Surface Area
Length
The diagram shows the happenings of a wire
the blue dots represent some of the negative
electrons which leads to a lower voltage output,
when the length is increased...
displayed 300 characters
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The more the temperature increases the more the particles vibrate leading to a reduction in output voltage although not by a huge amount this does have an affect.
Density
Density has a large affect on the amount of resistance. The resistance depends upon the amount of denseness e.g. a large surface area has less resistance because a small area has tightly packed atoms which in turn rebound many of these electrons...
displayed 300 characters
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