1. The problem statement, all variables and given/known data The electric potential difference between the ground and a cloud in a particular thunderstorm is 1.5E9 V. What is the magnitude of the change in the electric potential energy of an electron that moves between the ground and the cloud? _____ GeV 2. Relevant equations U\q=V 3. The attempt at a solution This should be simple. U=qV U=(1.6e-19)(1.5 GV) U=2.4e-19 GeV Why is this not right?