Question #591b0

1 Answer
Oct 19, 2015

Answer:

The electron volt (eV) is the work done in moving one electron through a potential difference of 1 volt.

Explanation:

If 1 Coulomb of charge is moved through a potential difference of 1 volt then 1 Joule of work is done.

Since the charge on the electron is #1.6xx10^(-19)"C"# then :

#1eV=1.6xx10^(-19)"J"#

The erg is an obsolete, non-SI unit for energy. It has the units #g.cm^(2)"/"s^(2)#.

It's a very small unit. According to Wiki it's the energy equivalent of a fly doing a push-up.

1 erg #=10^(-7)"J"#

So 1eV#=(1.6xx10^(-19))/(10^(-7))=1.6xx10^(-12)"erg"#