de-Broglie wavelength of an electron accelerated by a voltage of $50\; V$ is close to $(|e|=1.6 \times 10^{-19}\; C, m_e=9.1 \times 10^{-31}\; kg,h=6.6 \times 10^{-34}\;Js)$ :

Question

$\begin{array}{1 1} 0.5 \;A \\ 1.2 \;A \\ 1.7\;A \\ 2.4 \;A \end{array} $