Question

JV 1. A positive charge qi is located at the point (0,0) and a negative charge q2 at (a,0) At an arbitrary point (Oy) on the y-axis: (a) Find the magnitude of the electric field E1 due to charge qi and the magnitude of the electric field E2 due to charge q2 in terms of the given quantities q1, q2.y, and a. (b) Find the cos and sin of the angle θ that the vector E2 makes with the x-axis, in terms of a and y. (c) Find the total electric field vector E-(E, Ey) in terms of the magnitudes E1, E2, and angle θ. (d) Find the angle φ that E makes with the x-axis. 2. For the figure shown at the right, with positive charges qi, q2, q3, and q, located on the x-axis at corresponding distances xi, x2, x, and x, find the electric field at the origin.

Answer 1

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