Acharge q = 1.96 10-8 c is surrounded by an equipotential surface with a surface area of 1.18 m2. what is the electric potential at this surface?

V = 575.6 Volts

Explanation:

As we know that surface area of the equi-potential surface is given as

so we will say

Now the potential due to a point charge is given as

im sorry i dont know

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this