#3 A solid insulating sphere of radius a = 5 cm is located inside a conducting shell which has inner radius b = 10 cm and outer radius c = 15 cm. The insulator is positively charged with a constant volume density of p = 5.4nC/m3 while the shell is overall neutral. Hint: The electric field will be radial at all points. a.) On the axes provided, sketch the graph of the magnitude of the electric field. For full points, your graph must have the correct electric-field values at r = a, r = b, and r = c. (b.) Verify the statement given in the intro video that E = o/co at the surface of a conductor. (In this case, you need to verify for the both the inner and outer radius of the conducting shell.) Bold inside E(N/C) . . . . . . . . ... ... . .. . : . . . . . : . . . . . . . : . . . . : . . . . . . . . . . . . ; . . . . . . . . ; . . . . . . . . ; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . . . ... . . : .. . : . . . . . ... . . . . . . . . ; . . . . . . . . . .. . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . : . . . . . . . . . . . . . . . . . . . . C . . . . . . . . . . . . . . ... .. . . . . . . . . . . . .. . . . . . . . . . . .. . . .. . . .. .. . .. ... . . ... . . . . . . . . .: . . .... . . . . . .. . . . . . . .. . . . . . ...... . . . . . f.... ........ . : . a