Final answer:
The potential difference between point A and point B is 0 V, meaning that there is no difference in potential along a constant radius from a point charge. Therefore, the voltage output (vo) will also be 0 V.
Step-by-step explanation:
The potential difference between point A and point B (VB - VA) is 0 V.
This means that there is no difference in potential along a constant radius from a point charge.
Therefore, the voltage output (vo) will be 0 V.