Lab & Pre-lab #5: Voltage
Lab & Pre-lab #5: Voltage
Lab & Pre-lab #5: Voltage
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Fundamentals of Circuits III: <strong>Voltage</strong> & Ohm’s Law v 0.1To test your predictions you will need:• Computer with Logger-Pro software• <strong>Lab</strong> Pro interface• Two voltage probes• 1.5 V D cell battery with holder• connecting wires• alligator clips• Two #14 bulbs in sockets• contact switchActivity 2.1: <strong>Voltage</strong>s in a parallel CircuitStep 1: The experiment file L4A1-2 (Batteries) should still be open, and the axes that followshould be on the screen.<strong>Voltage</strong> 2 (V)<strong>Voltage</strong> 1(V)Time (s)Step 2: Zero both probes with nothing connected to them.Step 3: Connect the circuit shown in Fig. 7(b).Step 4: Begin graphing, and then close and open the switch as you have done before.Step 5: Sketch the graphs on the axes above.Step 6: Read the voltages using the analysis feature of the software.Switch open:<strong>Voltage</strong> across battery: <strong>Voltage</strong> across bulb A:Switch closed:<strong>Voltage</strong> across battery: <strong>Voltage</strong> across bulb A:PHYS-204:Physics II <strong>Lab</strong>oratory 9
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