Question

What is eV (electron-volt) a unit of ? How is it related to its S.I. unit?

• A. Energy : 1eV = 1.6 x 10^-19 J
• B. Force : 1eV = 1.6 x 10^-19 J
• C. Power : 1eV = 1.6 x 10^-13 J
• D. Force : 1eV = 1.6 x 10^-13 J
• E. Electrical Energy : 1eV = 1.6 x 10^-16 J

Answer 1

The correct option is A

Energy : 1eV = 1.6 x 10^-19 J

It is a unit of energy (generally used in modern physics)

It is defined as the energy gained by an electron when it is accelerated in an electric field of potential difference of W (1 volt)

1eV = 1.6 x 10^-19 J