Question 2: You find a wire made of an unknown material. You measure its length to be L = 75cm and its radius to be r = 0.5mm. You connect the wire to a V = 9V battery and ammeter which measures the current to be I = 22A. a) Draw a possible configuration of an ammeter, a battery, copper wires, and the mystery wire for this experiment. b) Find the resistivity of the wire. Look up a table of resistivity for different materials (I recommend Wikipedia). What do you expect this wire to be made of