The above figure shows seven charges. Determine the direction of the total force

Question

The above figure shows seven charges. Determine the direction of the total force on the charge at the origin due to all the other charges. Into which total force vector point? Use the right diagram to draw the individual forces (Choose A, B, C or D). The figure below shows two charges. Calculate the magnitude of the electric field at point P. Q_1 = - 1.90 mu C Q_2 = 1.20 mu C d_1 = 1.50 m d_2 = 1.60 m Calculate the size of the force on a charge Q = + 1.90 mu C placed at P due to the two charges from the previous problem.

Explanation / Answer

In the top figure, the upper and lower charges cancel, the left and right charges push right, and the other two push down and to the right, so the force vector on the point charge is directed into quadrant B.
The net electric force at P is E = ke (Q2/d22 + Q1d12) = 8.99 x 109 (-1.2 x 10-6/1.82 + -1.6 x 10-6/1.42) = -7073 N/C. The force on a 1.5 C charge would be QE = 1.06 x 10-2 N

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.