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What is Q(free)? dielectrics

  1. Oct 15, 2009 #1

    The chapter is electric potentials.

    In dielectrics, when solving for Q(bound), Q(free) is required.

    What is Q(free)?

    Is it Q with OR without the dielectric factored in? Or is C(knot) alone?

  2. jcsd
  3. Oct 15, 2009 #2


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    Staff: Mentor

    Re: Electromagnetism

    For a dielectric in a capacitor, [itex]Q_{free}[/itex] is the charge on the capacitor plates themselves, supplied by the circuit that the capacitor is part of.
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