The two charges in the figure below are separated by d=4.00 cm. (Let q1=-15.5 nC and q2 = 29.5 nC.)

Question

Question

(a) Find the electric potential at point A.

(b) Find the electric potential at point B, which is halfway between the charges.

Answer 1

Answer #1

a)

V_A = K ( q1 + q2) / d = 9*10^9* ( 29.5 - 15.5) *10^-9/ 0.04

V_A = 3150 V

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b)

V_B = k( q1 + q2) / (d/2) = 6300 V

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Answer 2

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