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Very short physics question?

  1. Jul 4, 2013 #1
    1. The problem statement, all variables and given/known data

    What do a capacitor and a selenoid have in common?

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Jul 4, 2013 #2


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    Staff: Mentor

  4. Jul 5, 2013 #3


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    Staff: Mentor

    This looks like part of a good multi-choice question. Can you provide the 4 options to choose from?
  5. Jul 6, 2013 #4
    I would say what they don't have in common, they appear to do the opposite,
    Look how an inductor (solenoid) affects current/voltage and how a capacitor affects current/voltage, should be relatively straight forward.

    That's one thing you could look at anyway. Is that the full question?
  6. Jul 6, 2013 #5
    I think the question might have something to do with energy.
    Might want to read up on this for both devices.
  7. Jul 6, 2013 #6


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    It does have something to do with energy.

    Hint: Resistors can't do it.
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