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Capacitor Wrap-Up

Energy Conservation in an RC Circuit

A voltage source (battery) will provide an energy of Q*emf to move the amount of charge Q to fully charge a capacitor to a final voltage of value emf. The energy stored in the capacitor is only (C*emf2)/2 = (Q*emf)/2 however. Where does the other half of the energy go? It's dissipated by the resistance in the charging circuit! See details.

Series and Parallel Capacitors

Concept Check

Dielectric Materials and Capacitance

Polarization of a Dielectric Material

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Last updated Oct. 5, 1997.
Copyright George Watson, Univ. of Delaware, 1997.