Point charges of equal magnitudes (10 nC) and opposite signs are placed on diago
ID: 1655019 • Letter: P
Question
Point charges of equal magnitudes (10 nC) and opposite signs are placed on diagonally opposite corners of a 60-cm times 60-cm square as shown in Fig. 1. If point A is the corner of this square nearest the positive charge and point B is located at the intersection of the diagonals of the rectangle and point C is located in between the point A and the point B. Determine the potential difference, V_B - VA and V_C - V_A? Answer: V_B - V_A = ________, Unit: _______ V_C - V_A = ______, Unit: _____ Show that the amount of work required to assemble six identical charged particles of magnitude +Q at the corners of a hexagon of side s. (A) (7.5 + squareroot 3)k_eQ^/s (B) (7.5+2 squareroot /3)k_e Q^/s (C) (9 + squareroot 3)k_eQ^2/s (D) (9 +2 squareroot 3)k_eQ^2/sExplanation / Answer
Since A, C and B all are equidistant from q and -q so using formula for electric potential that Electric potential due to a point charge q at a distance r from it (V) = kq/r (where q is considered with sign)
So total potential at B (VB) = k(q-q)/r1 = 0
Total potential at C (VC) = k(q-q)/r2 = 0
Total potential at A (VA) = k(q-q)/r3 = 0
So VB - VA = 0 volt
VC - VA = 0 volt