4. A positively charged conductor in the form of a large slab is placed between two, large neutral conducting slabs as shown in the end-wise view below:
The length and wirdth of all slabs is large compared to the size of the gaps between them.
a. Draw a diagram that shows the excess and induced charges on each of the three slabs. Sketch the Gaussian surface you
would use to compute the electric fields between the three slabs in the diagram.
b. Derive an equation for the magnitude of the electric field in the regions between slabs. Assume that the slabs are very large
compared with the distance between them and the surface charge density on one side of the charged slab is σ.
c. How does the field differ between this arrangement and one for a region above the surface of a large, isolated and charged
slab with the same surface charge density σ?
