98 Capacitance and DielectricsP26.64(a)Cdxxdx=∈−+=∈+−0021AAAAAafκκ(b)UCVVdx==∈FHGIKJ121212022∆∆κ(c)Fi=−FHGIKJ=∈−dUdxVd±0221∆afafAto the left (out of the capacitor)(d)F=×−×=×−−−2000885 1000500 450 12 2 00 10155 1021233bgejaf..... NP26.65The portion of the capacitor nearly filled by metal hascapacitance∈→∞0Axdand stored energyQC220→.The unfilled portion hascapacitance∈−0xd.The charge on this portion isQxQ=−AAaf0.(a)The stored energy isUQCxdQxd−=−∈20200203222AAaf.(b)FdUdxddxdQd
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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 .