1.

a. Let's say you are investigating changes in electric potential after you have already discovered your equipotential lines. You place the wire attached to the ground of the DMM on a 2.0 V line (point A) and the wire attached to the positive terminal of the DMM on a 8.0 V line (point B). A voltmeter is going to read a change in voltage (DV) between the two points, what would be the voltmeter reading for the situation described in the previous sentence? Label this value DVAtoB .

b. Next you place the wire attached to the ground of the DMM on a 8.0 V line (point B) and the wire attached to the positive terminal of the DMM on a 6.0 V line (point C) and record the value displayed on the voltmeter. Then the loop is completed when you place the wire attached to the ground of the DMM on a 6.0 V line (point C) and the wire attached to the positive terminal of the DMM on a 2.0 V line (point A) and record the value displayed on the voltmeter. What are the values for DVBtoC and DVCtoA ? What the sum of voltages around the closed loop, DVAtoB + DVBtoC + DVCtoA = ?