- #1
th5418
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Homework Statement
Find a potential a distance r from an infinitely long straight wire that carries a uniform line charge [tex]\lambda[/tex]. Compute the gradient of your potential and check that it yields the correct field.
Homework Equations
[tex]V=[/tex][tex]\frac{KQ}{R}[/tex]
[tex]\oint E \bullet dS=\frac{Q}{episolon}[/tex]
The Attempt at a Solution
I tried doing it the V=kq/r way, but then I realized it doesn't work, since for that it assumes that potential is zero infinitely far away. But it isn't. The problem doesn't want me to find the e-field first, which would be a lot easier, any tips?
Do i need to go to the most basic definition of potential?