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Capacitors Using Charge Sensors - Lab Report Example

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Capacitors Using Charge Sensors

The application of various capacitors with different capacitance also makes it important to determine unknown capacitance besides voltage calculation by using the equation (Q=CV) Six different capacitors were obtained from the lab and their capacitance measured. A parallel circuit was created composing of 1.0μF capacitor and 0.1μF capacitor (making 1.1μF. A second capacitor of 1.0μF was charged into 5V. The charged capacitor was then touched to the 1.1μF capacitor (uncharged) in the circuit. The 1.1μF was again discharged. The aforementioned steps were then repeated with a 0.1μF capacitor used in place of 1.0μF as the charge transfer capacitor. Then, instead of discharging the 1.1μF capacitor the 0.1μF capacitor was recharged to 5.0V followed by reconnecting it. The 1.1μF capacitor was then charged to 5.0V followed by sharing its charge with uncharged capacitor that has unknown capacitance. The final reading was made from the voltmeter and then used to arrive at the unknown capacitance by use of the equation Q=CV. The unknown capacitance was then directly measured from the digital voltmeter. A parallel-plate capacitor was constructed through inserting a waxed paper in between aluminium plates. The construct was then pressed together by placing on top a 1.0kg weight. A charge sensor was then mounted with a 0.01μF capacitor. The combined capacitance of 0.01μF capacitor, together with the charge sensor, was then measured by using the digital voltmeter’s capacitance capability. ...Show more


The major objective of this paper “Capacitors Using Charge Sensors” was to determine the capacitance of different conductor-dielectric geometries by use of “charge-sharing technique. In addition, the lab also involves calculating the amount of voltage cumulated…
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