To apply Problem Solving Strategy 18.1 Calculation of potential. Three point cha

Question

To apply Problem Solving Strategy 18.1 Calculation of potential. Three point charges with values q_1 = 8.00 nC, q_2 = 1.00 nC, and q_3 = 5.00 nC are placed on three consecutive corners of a square whose side measures s = 2.00 m. Point A lies at the fourth corner of the square, diagonally across from q_2. Point B lies at the center of the square. What are the values of the electric potential at point A and at point B? How much energy (supplied as work) is required to move a test charge q_4 = 2.00 nC from point A to point B? Assume the zero of electric potential is chosen to be at infinity. Part C What is the electric potential at point A? Express your answer numerically in volts. V_A = ___________ V Part D Part E

Explanation / Answer

Given that

q1 = 8.00 nC

q2 = 1.00 nC

q3 = 5.00 nC

a = 2.00 m

Electric potential at point A

Va = (k*q1/a)+(k*q2/a)+ (k*q3/(sqrt(2)*a)

Va = k/a(q1+q2+(q3/sqrt(2)))

Va = (9*10^9/2)*(8+1+(5/1.41))*(10^-9)

Va = 56.46 V

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