EE 43 100 RC Circuits EE 43 100 Pre Lab RC Circuits Name TA Section Please read the lab manual first then show your work here V Q C i t dt C Differentiating this equation we obtain i t C dV dt 1 If a constant current of 1 0 mA were to flow into a 200 F microfarad capacitor what would be the voltage across the capacitor after 3 seconds 2 Describe what would happen theoretically if you were to connect an ideal current source to the following circuits Use time plots to illustrate a R C 1 EE 43 100 RC Circuits b R C 3 An RC resistor capacitor circuit will have an exponential voltage response of the form v t A B e t RC where A and B are constants that express the final voltage and the difference between the initial voltage and the final voltage respectively a Given R 10 k and C 0 1 F a starting voltage of 5 Volts and an ending voltage of 0 Volts what will the voltage be at t 1 ms b At what time will the voltage be 0 5 Volts 4 Suppose you were given two black boxes which have either a series or parallel combination of R and C In the case of the series RC you would not be able to touch a probe between the R and the C in the black box so how would you go about determining R and C using the signal generator the oscilloscope and an external resistance Hint read the lab 2
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