In Figure 18.10, an electron moved from left to right through a region in which the elec...

In Figure 18.10, an electron moved from left to right through a region in which the electric potential changed by The corresponding change in potential energy was Suppose the electron is replaced by an oxygen ion What is the change in potential energy of the oxygen ion as measured in electron-volts, (a) -7500 eV, (b) -15,000 eV, or (c) -30,000 eV?

(reference figure 18.10)