An electron is located on the y-axis at y = -4.29 × 10⁻⁶ m. Find the magnitude and direction of the electric field at y = 8.59 × 10⁻⁶ m on the y-axis due to this electron.
a) Magnitude: 9×10⁹ N/C, Direction: positive y-axis
b) Magnitude: 8×10⁹ N/C, Direction: negative y-axis
c) Magnitude: 9×10⁹ N/C, Direction: negative y-axis
d) Magnitude: 8×10⁹ N/C, Direction: positive y-axis