A small sphere of mass
20g and having charge
0.5mC is suspended by a thread between the plates of a parallel plate capacitor as shown in the figure. What potential difference ( in volt) between the plates (separation
20cm) should be applied so that the thread makes an angle of
450 with the vertical?
![44239.jpg](https://search-static.byjusweb.com/question-images/toppr_ext/questions/44239.jpg)