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Electric Fields/Electric Potential

  1. Jan 19, 2012 #1
    I have a few questions about how to find the magnitude of an electric field.

    1) I need help with plotting the electric field after I have calculated the magnitude of the electric field on a graph, depicting in which direction the electric field is.
    2) I also need help with just electricity in general. I could really use a good study guide or outline/review on electricity. I have the the Giancoli AP Physics sixth edition book (if needed).

    Thanks everyone,

  2. jcsd
  3. Jan 20, 2012 #2

    Simon Bridge

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    Science Advisor
    Homework Helper

    Welcome to PF

    1. The direction of the electric field is the direction of the force experienced by a small positive test charge. The direction should drop out of the magnitude calculation.

    2. That is very general indeed.
    quick overview:
    ... the description changes a lot with your level.
    Giancoli is primarily for pre-med: you more bio-oriented?

    usually the "electricity" topic covers electric circuits and currents, while the "electromagnetism" topic covers fields and charges. Some courses treat magnetism separately.
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