An Isolated Air-Filled Parallel-Plate Capacitor That Is No Longer Connected

question 18

Short Answer

An isolated air-filled parallel-plate capacitor that is no longer connected to anything has been charged up to Q = 2.9 nC. The separation between the plates initially is 1.20 mm, and for this separation the capacitance is 31 pF. Calculate the work that must be done to pull the plates apart until their separation becomes 5.30 mm, if the charge on the plates remains constant. (ε₀ = 8.85 × 10^-12 C²/N ∙ m²)

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Stretched or pulled tight; not slack.

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Fluid, such as pus or clear fluid, that leaks out of blood vessels into nearby tissues, often as a result of inflammation or injury.

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A dry, dark scab or falling away of dead skin typically formed on a wound or burn site.