Does the Equation ΔE = qV Calculate Both Kinetic and Electrical Energy?

[grscott_2000]

If I know the charge on a particle and I know that it has initial speed of zero and I also know that it is passed through a potential difference of 100kV, can I say that its change in kinetic energy is

deltaE = charge of particle(q) x potential difference(100kV)


Or is this equation just used for finding electrical energy?

 

[Archduke]

Both. The electrical energy does work on the particle, meaning its kinetic energy increases. So, yeah, it can be used as both (assuming there's only an electro-static potential and no other forces involved).