- Hypotheses Experiment

plate voltage *V*_{p}

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

Which forces does act on electrons in the plate capacitor?

Test your answers by the experiment.

Because there is no force in horizontal direction, the electrons perform a linear motion without acceleration in this direction.

In vertical direction there is a constant force caused by the electric field. So electrons perform a linear motion with constant acceleration in this direction.

So equations of motion shown on the right can be used.

In vertical direction there is a constant force caused by the electric field. So electrons perform a linear motion with constant acceleration in this direction.

So equations of motion shown on the right can be used.

equation of motion in x-direction | equation of motion in y-direction |
---|---|

$x(t)=v_0\cdot t$ | $y(t)=\frac{1}{2}a_y\cdot t^2$ |

$v_x(t)=v_0$ | $v_y(t)=a_y\cdot t$ |

$a_x(t) = 0$ | $a_y(t)=\frac{F}{m}=\frac{V_{\text p}\cdot e}{m\cdot \text{d}}$ |