Four electric charges are arranged as shown. Each charge is placed a distance d = 3.0 cm from the origin, and the values of the charges are q1 = 1.5 µC, q2 = 3.0 µC, q3 = 4.5 µC, and

q4 = 6.0 µC.

(a) Determine the magnitude of the electric field E at the origin.

(b) Determine the direction of the electric field E at the origin. Express your answer as an angle θ, measured counterclockwise from the +x direction.

Now an electron of mass m = 9.11×10-31 kg and charge q = −1.60 ×10-19 C is placed at the origin and released from rest.

(c) Calculate the magnitude the initial acceleration of the electron.

(d) Determine the direction of the initial acceleration of the electron.

Kevin Nash

12 Years agoGrade upto college level