Recent content by wcelectric

  1. W

    Parallel Capacitors: Find Energy Decrease

    Oops. I mixed up C with Coulombs.
  2. W

    Parallel Capacitors: Find Energy Decrease

    Ok, so the net charge is 140 μC. But I don't understand why.
  3. W

    Parallel Capacitors: Find Energy Decrease

    So would I just add them? I am confused about the plates of opposite signs being together. It's still a parallel circuit?
  4. W

    Parallel Capacitors: Find Energy Decrease

    Homework Statement Two capacitors are connected in parallel to a battery with voltage of 28V. Let C_1 = 9.0 \mu F and C_2 = 4.0 \mu F . Suppose the charged capacitors are disconnected from the source and from each other, and then reconnected to each other with plates of opposite signs...
  5. W

    Capacitor with radius finding the energy density

    How do I find E, which I need to find the energy density? Then what do I do?