Preflight assignment 6


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The diagram depicts a region of space. The dashed curves indicate positions of equal potential energy for a test charge +q that is placed at various locations within this region. (The potential energy difference between neighboring dashed lines is the same everywhere) Three such locations (A, B, and C) are labeled.
(figure)
  1. Rank the locations A, B, and C according to the magnitude of the force that would be exerted on the test charge +q at those locations, from greatest to smallest. Explain your reasoning.


  2. Describe (as best you can in words) which direction the force on the test charge +q would be at point B?





    The three figures below represents vector fields F(x, y) mapped in the x-y plane. (They depict a vector quantity whose magnitude and direction varies only with x and y)
    Fig 1: (fig)    Fig 2: fig       Fig 3: fig

  3. List which of the three vector fields shown above have a curl equal to zero everywhere in the x-y plane? Explain briefly how you decided. (It might be none, one, or more than one - just list them, or say "none".)


  4. If the fields in figures 1-3 represent a force, which of them represents a conservative force? Explain your reasoning.




  5. Please submit a question you have about the reading assigned for the upcoming class. What seemed hard, was something confusing, what would you like us to spend class time on? If you can't come up with any question, how about a comment - (did anything strike you as interesting? )
    Reminder: the reading assignments are on our course calendar


    Thanks for your time.

Optional! - below is a space for any additional relevant comments, thoughts, or suggestions you have.




When you are satisfied with your responses click the SUBMIT button.