Two particles each with charge +2.92 µC are located on the x axis. One is at x =

Question

Two particles each with charge +2.92 µC are located on the x axis. One is at x = 1.00 m, and the other is at x = 1.00 m.

Two particles each with charge 2.92 HC are located on the x axis. One is at x 1.00 m, and the other is at x 1.00 m. (a) Determine the electric potential on the y axis at y 0.280 m. Your response differs from the correct answer by more than 10%. Double check your calculations. kV (b) Calculate the change in electric potential energy of the system as a third charged particle of -2.66 uC is brought from infinitely far away to a position on the y axis at y 0.280 m. Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. J

Explanation / Answer

a) E1 = (9x10^9x9x10^-6)/(1^2+0.28^2)

= 75111.276 N/C

|E2| = |E1| = 75111.276 N/C

E1y = E1 sin theta = E1 (0.28 / sqrt(1.49)) = 72329.456

total = 2E1y = 144658.91 N/C

b) F = qEy = 2.66 x 10^-6 x 75111.276 = 0.198 N downwards

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