# Electric Field -- Potential between the ends of a 2 meter stick

Fikremariam
Homework Statement:
The potential difference between the ends of a 2 meter stick that is parallel to a uniform electric field is 300V determine the magnitude of the electric field
Relevant Equations:
E=F/q
E=K q/r square
I tried to find the charge from the formula v=k q/r and apply it to find the field but couldn't be sure

Staff Emeritus
Homework Helper
Homework Statement:: The potential difference between the ends of a 2 meter stick that is parallel to a uniform electric field is 300V determine the magnitude of the electric field
Relevant Equations:: E=F/q
E=K q/r square

I tried to find the charge from the formula v=k q/r and apply it to find the field but couldn't be sure
In the formulas, ##E = kq/r^2## and ##V=kq/r##, what does the variable ##r## represent? Be specific.

Fikremariam
It represents the distance from the charge

Staff Emeritus
Homework Helper
More specifically, the distance from a point charge. In this problem, you're told there's a uniform field—that is constant magnitude and constant direction. Is the field of a point charge uniform?

Fikremariam
I didn't know that is why I asked

Staff Emeritus