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Transcribed Image Text:A paper-filled capacitor is charged to a potential difference of Vo
2.9 V. The dielectric constant of paper is K =
3.7. The
capacitor is then disconnected from the charging circuit and the paper filling is withdrawn, allowing air to fill the gap between
the plates. Find the new potential difference V of the capacitor.
V1 =
V
While the capacitor is disconnected from the charging circuit, an unknown substance is inserted between the plates. The plates
then attain a potential difference that is 0.49 times the original potential difference Vo (when paper filled the capacitor). What is
this unknown substance's dielectric constant K,?
Ku =
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