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lab2 5

lab2 5 - Winter Quarter 2009 0/35 Ohms law and DC Circuits...

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0 /35 1 2 A B C D E F resistor (R 1 ) 150 resistor (R 2 ) 50 µ{(R 1 )} 0.02 µ{(R 2 )} 0.02 Ω 6 A B C D E F G H I J Non-ohmic Resistor Ohmic resistor Winter Quarter 2009 Winter Quarter 2009 Experiment: Ohm’s law and DC Circuits Your name: Cory Poynter Partner: Performed on: 3/13/2009 TA: Section number: Promptness % (100 means it was on time): 100 Additional Scores (+) /Penalties (-): Please insert your material in the space between or after the red or yellow boxes, not in the boxes themselves. Abstract (4) The purpose of this experiment was to investigate resistive elements in simple circuits, to verify Ohm’s Law, and to see how combinations of two resistors affect a circuit. First Choose a resistor whose nominal value is less than 150 Ω and measure and record the resistance as R 1 using the Fluke as an ohmmeter. Next assemble the ohmic resistor circuit shown in Fig. 1. and vary the output of the power supply to record the voltage V from the power supply display and the measured current I from the Fluke at least ten different voltages. Next you are to assemble the Non-ohmic resistor circuit shown in Fig. 2, keeping your first resistor as R 1 and prepare a data table for the current I flowing through the circuit, the voltage V 1 across the resistor, and the voltage V lb across the light bulb. After words you are to construct a series circuit that’s in Figs 3 and 4 by first choose a second resistor R 2 that is not equal in nominal value to the first resistor R 1 . Then adjust the power supply to get at least seven sets of values of the voltage V across both resistors the current I flowing through them, the voltage V 1 across R 1 , and V 2 across R 2 . Finally construct the parallel circuit in Figs. 5 and 6 and then collect at least seven data sets of the voltage V across the resistors, the current I flowing through the circuit, and the currents I 1 and I 2 going through each resistor separately. The following data is what we obtained from the experiment:

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13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 A B C D E F G H I J I(mA) Voltage ( V )
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lab2 5 - Winter Quarter 2009 0/35 Ohms law and DC Circuits...

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