Two point charges +5μC and −3μC are kept 0.30m apart in air. A third charge of +1μC is brought from infinity to the point exactly midway between the two fixed charges.
Answer the following questions:
a. (i) Calculate the electric potential at the midpoint due to the two fixed charges.
b. (ii) Compute the work required to slowly bring the +1μC charge from infinity to this midpoint.
c. (iii) Find the total electrical potential energy of the three–charge system after the third charge is in place.