Question

The electric potential difference between the ground and a cloud in a particular 

thunderstorm is 1.2X10^9 V. In the unit of electron- volt, what is the magnitude of the 

electric potential energy of an electron that moves between ground and the clouds?

Answer 1

$\Delta U_{GC}=e\cdot\Delta V\ (in \ J)$

$\Delta U_{GC}=e\cdot\Delta V/e=\Delta V\ (in \ eV)$

$\Delta U_{GC}=\Delta V=1.2\cdot10^9\ (eV)=1.2\ (GeV)$ . Answer