W = Vq from the definition of potential difference -- AV = - AW . Recall that lev = 1.60 x10 C. q (1) How much potential difference or stopping voltage would be required to "stop" an electron with a kinetic energy of 3.2 eV traveling in the electric field shown on the right? Show all your Ex =3.2eV work. + + + + + + potential (2) If the stopping voltage for an electron is -2.7V, how much kinetic difference energy does the electron have in Joules? V TT Tha Ph