In the figure, four charges, given in multiples of 9.0010 -6 C form the corners

Question

In the figure, four charges, given in multiples of 9.0010-6 C form the corners of a square and four more charges lie at the midpoints of the sides of the square. The distance between adjacent charges on the perimeter of the square is d = 3.0010-2 m. What are the magnitude and direction of the electric field at the center of the square?

(A) The magnitude of E?

(B) Ex?

(C) Ey?

In the figure, four charges, given in multiples of 9.00 times 10-6 C form the corners of a square and four more charges lie at the midpoints of the sides of the square. The distance between adjacent charges on the perimeter of the square is d = 3.00 times 10-2 m. What are the magnitude and direction of the electric field at the center of the square? The magnitude of E?

Explanation / Answer

above I've calculated E due to charges at corner , So, Now I'll just calculate E due to charges at centre of sides and add them up...

so,

Ex = 318198051.534+k*2q/d^2+k*q/d^2

Ex = 318198051.534+9*10^9*2*9*10^-6/(3*10^-2)^2+9*10^9*9*10^-6/(3*10^-2)^2

=588198051.534 N/C

Ey =318198051.534+k*q/d^2-k*q/d^2 = 318198051.534 N/C

Enet = sqrt(Ex^2+Ey^2) = sqrt(588198051.534^2+318198051.534^2) = 668750288.096 N/C

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