A 1.00 nC charge is placed on the x-axis at x = - 1.00 m. A second 1.00 nC charge is placed on the x- axis at x = 1.00 m. A third charge of 1.00 nC is placed on the y-axis at y = - 1.00 m. A fourth charge is place on the y-axis at y = 1.00 m. What is the fourth charge if the electric field at the origin is zero?
A. 1.00 nC
B. -1.00 nC
C. 3.00 nC
D. -3.00 nC
E. 2.00 nC
A. 1.00 nC
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