Learn to solve complex electrostatics problems using the separation of variables method to determine electric potential in a specific geometric configuration. Work through a detailed problem from Griffiths Chapter 3 involving two infinite grounded metal plates parallel to the xz plane positioned at y = 0 and y = a, with the left end at x = 0 closed by an infinite strip that is insulated from the plates and maintained at a specific potential V₀(y). Master the mathematical techniques required to find the potential inside this "slot" configuration, developing skills in applying boundary conditions and solving partial differential equations in electrodynamics. Gain practical experience with one of the most important analytical methods used in electromagnetic field theory for problems with suitable symmetry.