Physics

Problem

Calculate the de Broglie wavelength of an electron that has been accelerated from rest through a potential difference of

200\,\text{V}

. \newline (Planck’s constant

h = 6.626\times10^{-34}\,\text{J s}

, electron charge

e = 1.60\times10^{-19}\,\text{C}

, electron mass

m_e = 9.11\times10^{-31}\,\text{kg}