Megavolt (MV) or mega electron volt (MeV) definition
Megavolt (MV) or mega electron volt (MeV) means the energy equal to that acquired by a particle with one electron charge in
Megavolt (MV) or mega electron volt (MeV) means the energy equal to that acquired by a particle with one electron charge in passing through a potential difference of one million volts in a vacuum. Current convention is to use MV for photons and MeV for electrons.