The drawing shows a square, each side of which has a length of l = 0.250 m. two different positive charges q1 and q2 are fixed at the corners of the square. find the electric potential energy of a third charge q3 = -4.00 x 10-9 c placed at corner a and then at corner b.

part (a) P.E. (at A) =

part (b) P.E. (at B) =

Explanation:

Given,

Net electric field due to the the both charges on the third charge at point A.

part (b)

Net electric field due to the the both charges on the third charge at point B.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2