(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

There is a thin rod of

length L that carries a uniform charge per unit

length [tex]\lambda[/tex]. Starting from the expression for the

potential of a point charge, derive an expression

for the electric potential V (y) at a distance y

away from the centre of the rod on the axis (y) of

the rod. Assume y > L/2.

Use this result to derive the y-component of

the electric field, Ey, along the axis of the rod,

for y > L/2.

2. Relevant equations

V(r) = Q/4[tex]\pi[/tex][tex]\epsilon[/tex]r

[tex]\Delta[/tex]V = - [tex]\int[/tex]E[tex]\cdot[/tex]ds

3. The attempt at a solution

I thought that the electric potential would be unchanged since the electric field is perpendicular to the displacement...

Or is this acceptable because the wire is not infinite?

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# Homework Help: Electric Potential Energy of a Rod

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