a) Find the electric potential, taking zero at infinity, at the upper right corner (the corner without a?

charge) of the rectangle in the figure below. (y = 3.0 cm and x = 5.9 cm)

Answer 1

(a) electric potential = kq1/r1 + kq2/r2 + kq3/r3

= (8.988×10^9) x [(8×10^-6)/(0.059) + (2×10^-6)/(0.067) +
(4×10^-6)/(0.03)]

(b) electric potential = kq1/r1 – kq2/r2 + kq3/r3

= (8.988×10^9) x [(8×10^-6)/(0.059) – (2×10^-6)/(0.067) +
(4×10^-6)/(0.03)]

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