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Computational RC circuit Lab Introduction In this lab, the major objective was to simulate a RC circuit that could allow us to measure the current and voltage across the resistor and capacitor. Meeting the above objective provided a platform for exploring how charge on capacitor changes with time when different parameters were varied. Apart from a graph of charge on capacitor against time, another one for current against time was also plotted to current is affected by change on charge on capacitor.
This could the give an immediate overview about the activities of a capacitor in a circuit. Parameters that were changed to meet the objective of this study includes charge across, capacitance and resistance. ConclusionBoth simulation and laboratory procedures produced results consistent with expectations with empirical confirmation of the theory of the electrical behavior of RC networks as developed in the experiment. Further, the correctness of the development is confirmed considering that it agrees with the preceding experiment even though there were slight deviations.
The results thereby were successfully used to establish how change in resistance, capacitance, and charge affected the charge of the capacitor over time. When the charge was increased to 20, the charge of the capacitor slowly discharged over the course of the simulation, but converged on a value around 16 rather than descending all the way to 0. When capacitance was changed to 20, the charge of the capacitor very lowly descended until it actually attained a negative charge. When the resistance was increased to 30, the charge of the capacitor dropped to below 0 very quickly.
Further, the simulation also showed that the relationship between current and capacitor is such that when capacitor is fully charged the flow of any electrons is blocked thereby no change is observed in current at that point. The possible sources of error for the deviations can be attributed to experimental error especially for the simple mistakes in positioning the oscilloscope cursor. Other possible source is deviations observed in input-offset voltage and the input-bias current.
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