Three point charges, A = 2.20 µC, B = 6.90 µC, and C = -4.60 µC, are located at

Question

Three point charges, A = 2.20 µC, B = 6.90 µC, and C = -4.60 µC, are located at the corners of an equilateral triangle as in the figure above. Find the magnitude and direction of the electric field at the position of the 2.20 µC charge.

0.500 m 60.0° a) Three point charges, A 2.20 C B 6.90 C and C 4.60 C are located at the corners of an equilateral triangle as in the figure above. Find the magnitude and direction of the electric field at the position of the 2.20 C charge. 6217 X de 16217x 2.19+0 2.19e+05 magnitude Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. N/O

Explanation / Answer

E = (- k*q1/r^2 cos(60) + k*q2/r2^2 )i^ - k*q1/r^2 sin(60) j^
E = - (9.0*10^3*6.90)/0.5^2 * cos(60) i^ +  (9.0*10^3*4.60)/0.5^2 i^ - (9.0*10^3*6.90)/0.5^2 * sin(60) j^
E = 41400 i^ - 2.15 * 10^5 j^

|E| = sqrt(41400^2 + (2.15 * 10^5)^2) N/C
|E| = 2.19 * 10^5 N/C

Direction = tan^-1((2.15 * 10^5)/41400)
Direction = 281.0o Counterclockwise from +ve x axis,

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