An Electron, Initially at Rest, Is Accelerated Through a Potential

Multiple Choice

An electron, initially at rest, is accelerated through a potential difference of 2.50 MeV, thereby increasing its total energy by 2.50 MeV. The momentum of the electron is

A) 2.12 MeV/c.
B) 2.52 MeV/c.
C) 2.97 MeV/c.
D) 3.21 MeV/c.