Answer Happy

2. The figure below shows three conducting plates that can be assumed to be infinite in extent. The left and center plates are very thin and carry surface charge densities of on and on respectively. The values of og and op are listed in the figure. The right-hand plate has a thickness of 2cm and carries no net charge. y a 6 O, da = +5 C/m2 Op = -3 C/m2 01 + 02 = 0 X * A B ----4 cm -4 cm-- 6 cm 6 cm 8 cm 8 cm (a) What is the electric field at the point A due to the thick plate alone? The electric field is a vector: be sure to give both magnitude and direction. (b) What is the electric field at point A due to all three plates? Be sure to give both magnitude and direction. (c) Calculate the charge densities 01 and 02 on the left and right sides respectively of the thick plate (see figure). (d) Find the potential difference Vc – Vp between the point B at x = 0 cm and the point C at x = +8 cm indicated on the figure.