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vrinda mukund
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Homework Statement
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?
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 infinite grounded metal? how does this (2d*d) appear in the denominator? des this q and -q appears because of induction charging ?