How much work does the electric field do in moving a proton from a point with a potential of +106V to a point where it is -55.5V? Express your answer in joules.
Note: The charge on a proton is 1.6×10-19C
Work done = Chargechange in potential (for constant electric field)
= -(2.58410^-17) Joules (C*V = joules)