Finding the position of an image charge

[Arman777]

Homework Statement

Finding the position of an image charge

Relevant Equations

No equation required

I am trying to use the Method of images for this configuration, But somehow I don't know where should I put the imaginary charge. I know the on the surface of the conductor the potential must be zero and the imaginary charge should be other side of the conductor but that's all I cay..

 

[Abhishek11235]

Are you sure you need to find image charge for the problem? I mean there may not exist such configuration of image charge(it may,but I don't know). If you want the plates to be at 0 potential,you put -Q charge at some distance but this doesn't yield boundary condition on circle. You put another charge to make it 0 but this screws up potential at plates and ad infinitum subject to total constraint that sum of charges is -Q and I don't think that this will be converging!

 

[Arman777]

I see. I don't have much about how to solve this problem...