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Plate Puller

Pull a capacitor's plates apart, battery on or off. Predict the force and the work.

Physics · Class 12 · Force between the plates · 5 simulations. For JEE, NEET and your boards.

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What you'll learn

  1. The pull: Each plate feels half the field
  2. Battery on, gap doubled: Battery on: V stays, so F ∝ 1/d²
  3. Pull it apart, battery off: Battery off: a steady pull
  4. Pull it apart, battery on: Battery on: count the battery too
  5. Energy in each cubic metre: Energy density u = ½ε0E²