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19.2 Exercise 5

Avg difficulty 2.5

Consider three parallel conducting plates, with a space of 3.0 cm between them. The leftmost one is at a potential of +45 V, the middle one is held at ground, and the rightmost is at a potential of -75 V. What is the magnitude of the average electric field on an electron traveling between the plates? (Assume that the middle one has holes for the electron to go through.)

  1. 1500 V/m
  2. 2500 V/m
  3. 4000 V/m
  4. 2000 V/m

OpenStax College Physics 2e, 19.2 Electric Potential in a Uniform Electric Field, exercise 5

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.