PHYSICS 251: SUPPLEMENTAL PROBLEMS

(a) Find the size and direction of the electric field for the following distances from the wire's center. EXPLAIN your reasoning if E=0. (i) r=0.2 mm (ii) r=2.0 mm (iii) r=3.1 mm (iv) r=4.0 mm (b) For a 1 cm length of the cable, find the amount of charge on the following surfaces: (i) outer surface of wire ................
................