factors affecting the resistance of wire

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Issue:

Science

 

Written by:

Lori B

 

Date added:

March 26, 2016

 

Level:

University

 

Grade:

A

 

No of pages / words:

7 / 1745

 

Was viewed:

6949 times

 

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Essay content:

The idea of resistance is simply how difficult it is for the electrons to move through a material. The more difficult it is, the more energy they lose in the material on their travels. We define electrical resistance as the ratio of voltage to current. The equation we use to find the resistance from the current and voltage is: Resistance (R) = Voltage (V) ? Current (I) Put more simply, it is the number of volts difference across the object when one amp of current flows...
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You should recall that voltage is the number of joules of energy transferred by one coulomb of charge, and that current is the number of coulombs of charge passing a place each second. What the object is made of will have an effect on its resistance. Not all metals even are equally as good at conducting electricity...
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