26CHAPTER OUTLINE26.1 Definition of Capacitance26.2Calculating Capacitance26.3Combinations of Capacitors26.4Energy Stored in a ChargedCapacitor26.5Capacitors with Dielectrics26.6Electric Dipole in an ElectricField26.7An Atomic Description ofDielectricsCapacitance and DielectricsANSWERS TO QUESTIONSQ26.1Nothing happens to the charge if the wires are disconnected. Ifthe wires are connected to each other, charges in the singleconductor which now exists move between the wires and theplates until the entire conductor is at a single potential and thecapacitor is discharged.Q26.2336 km. The plate area would need to be 10∈m2.Q26.3The parallel-connected capacitors store more energy, since theyhave higher equivalent capacitance.Q26.4Seventeen combinations:IndividualCCC123,,ParallelCCCCCCCCC121323+++++,,,Series-Parallel1113CCC+FHGIKJ+−, 12C+FHGIKJ+−, 11C+FHGIKJ+−31CC C++FHGIKJ−, 21++FHGIKJ−, 11++FH
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .