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jelliDollFace
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Homework Statement
point A is between two charges, one to the left (+2 microcoul) and one to the right (-2 microcoul). point A is midway between the two charges. the two charges are 5cm apart. what is the electric field in the plane of the page (diagram) at a point 5cm left from point A. give in terms of x and y components of the electric field
assume positive x is directed to the right, and positive y is directed upward of point A
Homework Equations
electric field = kq/r^2 where k is 9*10^9, q is charge, r is distance
The Attempt at a Solution
E1 = kq_l/r_1^2
= (9*10^9)(+2*10^-6) / (0.025^2)
= +2.88*10^7 n/c
E2 = kq_r/r_2^2
= (9*10^9)(-2*10^-6) / (0.075^2)
= -3.2*10^6 n/c
Enet = E1 + E2 = (+2.88*10^7) + (-3.2*10^6) = +2.56*10^7 n/c
so Enet is directed to the right, purely x direction, no y direction
(Ex, Ey) = (+2.56*10^7, 0) n/c
my solution is incorrect. what did i do wrong? did i interpret the question correctly (plane part), if so could you explain what the "plane" part means?