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Essay

The resistance of a wire

Essay specific features

 

Issue:

Science

 

Written by:

Richard M

 

Date added:

January 11, 2015

 

Level:

University

 

Grade:

A

 

No of pages / words:

7 / 1740

 

Was viewed:

9859 times

 

Rating of current essay:

 
Essay content:

In experiment 1 the same bit of wire and the same thickness need to be kept constant. In experiment 2, the length will need to be kept constant to make sure only the variables indicated are investigated to ensure a fair test. Metals conduct electricity because the atoms in them do not hold on to their electrons very well, and so creating free electrons, carrying a negative charge to jump along the line of atoms in a wire...
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Resistance is caused when these electrons flowing towards the positive terminal have to ?jumps' atoms. So if we double the length of a wire, the number of atoms in the wire doubles, so the number of jumps double, so twice the amount of energy is required: There are twice as many jumps if the wire is twice as long...
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General issues of this essay:
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