Work needed to move an Electron

[Krysrhap]

Homework Statement

Calculate the amount of work (in electron-volts) it would take to move an electron from 15.1 m to 16.2 m away from a +3.50 μC point charge.

Homework Equations

W=qΔV (?)
[/B]

The Attempt at a Solution

None yet. I'm not even sure where to start!

 

[mfb]

W=qΔV (?)

That equation can be useful, yes.

What is the potential of a point charge at a distance r?

 

[HallsofIvy]

The force will decrease as you move the electron away from the charge so just "force times distance" is not sufficient. You will need to use "integral or force times dx".

 

[BvU]

The force will decrease as you move the electron away from the charge so just "force times distance" is not sufficient. You will need to use "integral or force times dx".

Correct. And complicated. That's why it's convenient to use the potential. Post #2 puts the key question for this one !