PHYS 122 Quiz: 122A_Quizzes3-1to4-2
Document Summary
Charges of magnitude +q and -q, respectively, are distributed uniformly along the top and bottom halves of a non conducting rod. What is the direction of the electric field at point p? a) b) To the left c) up d) down e) The direction of the electric field at point p is down. The charge elements in upper and lower regions, a same distance away from the boundary create electric fields that have the same magnitude and opposite direction in the horizontal direction. So, all the horizontal components of electric field cancel. An infinite plane lies in the yz-plane and its surface has a uniform positive charge. An electron is placed at rest at x = d, and let go. What is the motion of the electron after it is let go? a) b) c) d) e) It moves towards the charged plane with an increasing acceleration. It moves towards the charged plane with a decreasing acceleration.
