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Homework Help: Energy Stored in a Capacitor

  1. Feb 17, 2009 #1
    A capacitor is completely charged with 650 nC by a voltage source that had 375 V.

    The initial air gap of the capacitor above was 7 mm. What is the stored energy if the air gap is now 11 mm?
  2. jcsd
  3. Feb 17, 2009 #2


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    Has the voltage source been disconnected before increasing the distance?
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