Establish a relation between an electron volt and the S.I. unit of the physical quantity which it measures.

Explanation

When an electron is accelerated by a potential of 1 volt, the energy gained by it is termed as electron volt.
`W= qV`
`:. W= 1.6 xx 10^(-19) xx 1J`
`:. 1eV= 1.6 xx 10^(-19)J`