Wednesday, November 24, 2010

How much charge does that capacitor store? q= nC?

Question info - A capacitor with its plates separated by paper stores 5.0 nC of charge when it is connected to a particular battery. An otherwise identical capacitor, but with its plates separated by Pyrex glass, is connected to the same battery.How much charge does that capacitor store? q= nC???I'll use %26quot; → %26quot; to signify %26quot;is proportional to%26quot;



???Q = C ? V



??C_paper → ??_paper

??C_pyrex → ??_pyrex



?Since V is the same,?as?C↑?then?Q↑?proportionally



?(C_paper) ? (C_pyrex) = (??_paper) ? (??_pyrex) = (Q_paper) ? (Q_pyrex)



?(C_paper) ? (C_pyrex) = (??_paper) ? (??_pyrex) = (5 nC) ? (Q_pyrex)



?Q_pyrex = (5 nC)???(??_pyrex) ? (??_paper)



?So just plug-in the values for ??_pyrex and ??_paper and solve for Q_pyrex
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