20. A continuous metal wire connects the two ends of a 3 V battery with a rectangular loop. The negative terminal of the battery has been chosen as the point where V=0 V. a. Locate and label the approximate points along the wire where V=3V, V=2 V, and V=1 V. b. Points a and c are inside the wire. Point b is inside the battery. Does the electric field at a, b, and c point left, right, up, or down? Or is E=0? É E E c. In moving through the wire from the negative to the positive battery termin potential increase, decrease, or not change? If the potential changes, by how much does it change?​