Mastering Physics: Electric Fields and Equipotential Surfaces

Mastering Physics: Electric Fields and Equipotential Surfaces

The dashed lines in the diagram represent cross sections of equipotential surfaces drawn in 1 V increments. (Figure 1)

Figure 1

Part A

Question: What is the work done by the electric force to move a 1 C charge from A to B?

Answer: 0 J 

Part B

Question: What is the work done by the electric force to move a 1 C charge from A to D?

Answer: 1 J

Part C

Question: The magnitude of the electric field at point C is

Answer: greater than the magnitude of the electric field at point B.