johndoe14
Jan30-11, 09:18 PM
1. The problem statement, all variables and given/known data
A current of 1.82A flows through a copper wire 1.75m long and 1.10mm in diameter.
a)find the potential difference between the ends of the wire
b) what diameter of copper wire is needed to be a potential difference of .100V
2. Relevant equations
I know the resistivity of Cu is 1.68 * 10^-8
the diameter needs to be converted to M
3. The attempt at a solution
I am unsure of how to set the problem up
Can someoe please give detailed steps of how to set this problem up and any conversions or other given factors that ay be needed. I am still waiting on my back ordered book to arrive :(
A current of 1.82A flows through a copper wire 1.75m long and 1.10mm in diameter.
a)find the potential difference between the ends of the wire
b) what diameter of copper wire is needed to be a potential difference of .100V
2. Relevant equations
I know the resistivity of Cu is 1.68 * 10^-8
the diameter needs to be converted to M
3. The attempt at a solution
I am unsure of how to set the problem up
Can someoe please give detailed steps of how to set this problem up and any conversions or other given factors that ay be needed. I am still waiting on my back ordered book to arrive :(