Two semi-infinite grounded conducting planes meet at right angles. In the region between them, there is a point charge q, situated as shown in Figure 1. (a) Set up the image configuration, and calculate the potențial in this region. What charges do you need, and where should they be located? (b) What is the force on q? (c) How much did it take to bring q from infinity? y4 b a V = 0

Two semi-infinite grounded conducting planes meet at right angles. In the region between them, there is a point charge q, situated as shown in Figure 1. (a) Set up the image configuration, and calculate the potențial in this region. What charges do you need, and where should they be located? (b) What is the force on q? (c) How much did it take to bring q from infinity? y4 b a V = 0