notice to determine efield at the surface of the planes not at the intersection point of the planes

4. An axon is a long, slender projection of a neuron that conducts electrical impulses away from the neuron's cell body (soma). An axon can be over a meter long in humans or even longer in large animals. When the axon is not stimulated, there is membrane potential and the axon can be assumed as a uniform line charge. An infinite line charge of charge density +Po is located midway between two large, intersecting conducting planes forming a 90-degree angle (As shown in the figure): O +Po 2a 45 (a) Determine the systems of image charges that will replace the conducting boundary that are maintained at zero potential. (b) Determine the electric field and charge density on the surface of the two conducting planes