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MY NOTES
ASK YOUR TEACHER
A 3.18-nF parallel-plate capacitor is charged to an initial potential difference AV, = 100 V and is then isolated. The dielectric material between the plates is porcelain, with a dielectric constant of
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6.
(a) How much work is required to withdraw the porcelain sheet?
(b) What is the potential difference of the capacitor after the porcelain is withdrawn?
V

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