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# Lab3 - Lab 2 DC and Ac circuits Brian Harmer 903366445...

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Lab 2: DC and Ac circuits Brian Harmer 903366445 February 3, 2009 4BL Thursday 2pm Introduction:

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In this lab we investigated DC and Ac circuits. From the experiment and lab reports we will discovery differences between the two types of circuits. On major difference is that DC current flows in one direction where an AC circuit will have alternating currents in both directions. Our results will show this. Also from this experiment we will identify relationships and verify theories like ohms law. We create a DC circuit by connecting a load and then running a current through the circuit to the positive and negative terminals of a battery. This creates a closed circuit which creates a flow from the positive terminal to the negative terminal of the battery from our load device. This is created due to the potential difference by the battery. We created an AC circuit by connecting our circuit to a sinusoidal varying voltage source. This causes a current to alternate direction with respect to time. The general purpose of this lab is to vary different elements(like resistors capacitors and inducers) in both the DC and AC circuit and too see how it affects Ohms law and residence frequency along with other aspects of circuits. In the first part of the lab we will be creating a relationship between a current and a voltage for one resistor using a random function generator as the source. We built a circuit identical to the one shown bellow. Figure 1: R(simple resister circuit) As for all data collected in this lab we will recorded it using the computer program(ADC) and will output both data in Volts and Amperes. This data will represent the potential difference.
Next we created a similar circuit but this time one with resisters in series and then with resisters in parallel. The output data will be the same as above.

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Lab3 - Lab 2 DC and Ac circuits Brian Harmer 903366445...

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