- #1
Silviu
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Hello! I am a bit confused about calculating the induced surface charge density on an infinite conducting plane, with 0 potential, in the presence of a charge, q, a distance d above it. Assuming that the plane is in xy plane and the charge in positive z region, in the book they use the method of mirror charges to calculate the potential V at every point in space and in order to calculate the surface charge density they use: ##\sigma=-\epsilon_0\frac{\partial V}{\partial z}_{(z=0)}##. How do they get to this formula?
Thank you!
Thank you!