Finding Îµo

Finding Îµo - Finding o Johnathon Tran University Physics...

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Finding ε o Johnathon Tran 03/02/08 University Physics II, H1 Dr. John Stewart Justin Mitchell

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Purpose: To calculate ε o through experiment and to compare the calculation to the known, accepted value of ε o . Theory: The entire procedure for finding ε o is based from the equation C = ε o A/d , where C is capacitance of the parallel plate capacitor, A is the area of the plates, and d is the distance between the two plates. Since ε o and area are constant, and capacitance and distance are variables; we can graph the relationship between the capacitance and inverse distance. If inverse distance is our independent variable and capacitance is our dependent, the slope of the graph of capacitance versus inverse distance will be ε o times the area. We can then get ε o by dividing the slope by the area. Procedure: Area can be found by squaring the length of each side, which is simply measured with a ruler, and capacitance can be simply measured by a multimeter. To get a distance between the two plates, we stacked identical plastic spacers at every corner to get
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This note was uploaded on 05/04/2008 for the course PHYS 2074 taught by Professor Stewart during the Spring '08 term at Arkansas.

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Finding Îµo - Finding o Johnathon Tran University Physics...

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