A point charge Q is placed at point O as shown in the figure. Is the potential difference Va-Vb positive,negative or zero ,if Q is
i) positive ii) negative?
Kindly refer to the link given below for an answer to a similar query :
https://www.meritnation.com/ask-answer/question/a-point-charge-q-is-placed-at-o-as-shown-in-fig-is-va-v/physics/6278325
https://www.meritnation.com/ask-answer/question/a-point-charge-q-is-placed-at-o-as-shown-in-fig-is-va-v/physics/6278325