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Essay

resitence of wire

Essay specific features

 

Issue:

Science

 

Written by:

James B

 

Date added:

October 25, 2012

 

Level:

University

 

Grade:

A

 

No of pages / words:

2 / 302

 

Was viewed:

8511 times

 

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Essay content:

If the length of the wire is doubled, the electrons bump into twice as many ions so there will be twice as much resistance. So If the cross-sectional area of the wire doubles there will be twice as many ions and twice as many electrons bumping into them, but also twice as many electrons getting through twice as many gaps...
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If there are twice as many electrons getting through, as there is twice the current, the resistance must have halved. This means that I am assuming that the temperature is kept constant and that the material is kept constant. Method Equipment needed: 1 x Power Pack (to give varied voltage) 1 x Voltmeter 1 x Ammeter 5 x wires (with crocodile clips) wire of varied length and thickness First, set up the experiment as shown above...
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General issues of this essay:
current and resistance of a wire and the affects when the length changes How does Length affect resistance? How does the length of a wire affect its resistance? Physics Coursework Theory - Resistance of a Wire Resistance of a Wire Resistance of a Wire Resistance of a Wire Resistance of a Wire Resistance of wire resistance of a wire resistance of a wire resistance of a wire resistance of wire resistance of wire The resistance of a wire
 

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