Feb2Note - PHYS142 Lecture 12 Capacitance and Dielectrics...

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Capacitance and Dielectrics • Chapter 26 All sections except 6 26.1 Definition of Capacitance 26.2 Calculating Capacitance 26.3 Combinations of Capacitors 26.4 Energy Stored in a Charged Capacitor 26.5 Capacitors with Dielectrics 26.7 An Atomic Description of Dielectrics PHYS142 Lecture 12 2
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When a dielectric is inserted in a parallel plate capacitor The capacitance increases when a dielectric material is inserted between the capacitor plates. κ C C 0 is called the dielectric constant of the material or the relative permittivity. The permittivity of the dielectric is =  0 . In general, d A ε d A ε C 0 3 Capacitors with dielectrics
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A parallel plate capacitor has capacitance of C 0. When it is connected to a battery of voltage V 0 , it has charge of magnitude Q 0 on its plates. It is then disconnected from the battery and the space between the plates is filled with a material of dielectric constant 3 . After the dielectric is added, the magnitudes of the
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Feb2Note - PHYS142 Lecture 12 Capacitance and Dielectrics...

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