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

The work done in bringing a charge +q from infinity in free space to a postion at a distance D in front of a semi-infinite grounded metal surface?

3. The attempt at a solution

Actually i know the method to solve it, but didn't understand its logic.

F=[-1/(4pi*e0)](q*-q)/(2d*d)

When we integrate this F as integral of F.dr between the limits x= d and x= infinity we get the result.

my question is what is this semi infinte grounded metal? how does this (2d*d) appear in the denominator? des this q and -q appears because of induction charging ?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Potential at a point

**Physics Forums | Science Articles, Homework Help, Discussion**