For the deflection of the electrons holds: the lower $V_\text{a}$, the bigger the deflection y(x).
Task:
Check if we have also: $y(x) \sim \frac{1}{V_\text{a}}$. For checking the capacitor voltage $V_\text{p}$ is set to 3.2 kV. Complete the table at bottom of the page, by modifying the acceleration voltage and getting the missing values out of the experiment.
acceleration voltage ${V_\text{a}}$
2 kV
2.5 kV
3 kV
3.5 kV
deflection by x = 5 cm
cm
cm
cm
cm
${V_\text{a}} \cdot\text{deflection}$
Notice: The approximately constant pruduct ${V_{\text a}}\cdot y(x)$ shows that $y(x)\sim \frac{1}{V_{\text a}}$.
The approximately constant pruduct ${V_{\text a}}\cdot y(x)$ shows that the deflection $y(x)\sim \frac{1}{V_{\text a}}$.