Question

An accelerated electron has energy of 9.6 × 10⁻¹⁸ J. Express the energy in electron volts (eV).

Answer 1

We use 1 eV = 1.6 × 10⁻¹⁹ J

\[ \text{Energy in eV} = \frac{9.6 \times 10^{-18}}{1.6 \times 10^{-19}} \]

= 60 eV

So, the energy is 60 eV.