c) A high-voltage transmission line conductor of radius 10mm is suspended in air, at height = 12m above an ideal ground plane. Using the method of images, the field distribution at ground level can be estimated as shown in Figure 1. Ep Image Charge Figure 1 (i) Sketch a plot of the electric potential and electric field along a vertical line from the centre of the wire to the ground. (ii) The line is operated at +33kV dc. Estimate the charge density λ on the conductor to the nearest nC/m (iii) What is the line to ground capacitance per unit length of this trasmission line? State any assumptions made and explain your reasoning.