## controls:

acceleration voltage Va
plate voltage Vp

$E=\frac {V_{\text p}}{\text d}=$ ${0}$ $\frac {\text V}{\text m}$

## Task: Which forces does act on electrons in the plate capacitor?Test your answers by the experiment.

Which force acts in the electric field on electrons in horizontal direction?
no force
a constant positive force
a constant negative force
Which force acts in the electric field on electrons in vertical direction?
no force
a constant force
nearby plate decreasing
nearby plate increasing