Question

can someone tell me a simple way to convert J to eV? thanks!

Answer 1

\[1eV = 1.6 * 10^{-19} J\]

Answer 2

@can444

Answer 3

\[1 ~\text {Joule}=6.2\times10^{18}~\text{eV}\]
\[1.6\times10^{-19} ~\text {J}=1~\text{electonVolt}\]

Answer 4

I eV is the energy gained by an elementary charge under a pd of 1V.

As Energy = charge.pd, and plugging in coherent SI units, the answer is:

e = 1.6 10(-19) C
pd = 1V

1 eV = 1.6 10(-19) C.V = 1.6 10(-19) J

J and C.V are the same unit.

Answer 5

Just divide the answer which is in joules by 1.602*10^-19 and we get the result in ev