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Homework Help: Does work increase if q increases?

  1. Jan 28, 2012 #1
    1. The problem statement, all variables and given/known data
    If positive work is done on a positive test charge will the work increase,decrease or stay the same if the test charge increase

    2. Relevant equations
    W=fa W=∆K

    3. The attempt at a solution
    the magnitude of the test charge doesn't affect the Electric Field so the work will be the same
  2. jcsd
  3. Jan 28, 2012 #2
    W = E*q*d*cos theta. I'm not actually sure I understand the question to be honest
  4. Jan 28, 2012 #3
    The magnitude of the field does affect the force on the test charge.
    The Field is points (diverges/source) from positive charges to negative charges (converges/sink).
    The field is repulsive with the positive charge. Attractive with the negative.
    The magnitude will be the same, the direction different for a negative charge assuming the magnitude of the charge is the same.
    Hope this helps.
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