Physics 2 Experiment 4.docx

# Physics 2 Experiment 4.docx - Experiment 4 Resistors in...

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Experiment 4: Resistors in Series and Parallel Christian Lee 21 July 2017 Location: Home Physics 2426- Summer 2017 Abstract, Experiment, and Observation

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Abstract: The purpose of this experiment is to distinguish the difference uses for resistors between resistors in series and in parallel, to reinforce and practice the use of a digital multimeter (DMM) as a voltmeter and as an ammeter, to learn how to construct electrical circuits in series and in parallel and observe the difference in light intensity between light bulbs in series and parallel. It was noted that the light was brighter when only one bulb was present, and I became dim when a second bulb was introduced. Experiment: Lab Setup:
Materials: Batteries Battery holders Jumper cables Digital multimeter Light bulbs Light bulb holders Resistor set Procedures Use the given color code to identify the specific resistor that will be used in the circuit. Use the digital multimeter (DMM) to measure the resistance of each resistor. Then connect the resistors on series, and also measure the combined resistance (R eq ) without the battery present. Then, add a battery in series, and also measure the current and voltage across each resistor. Now, connect all the three resistors in parallel, and also measure the R eq with no battery present. Then complete the circuit by adding a battery in parallel. Measure the voltage and current across each resistor using the DMM. Now, set up three resistors on combination of series and parallel without a battery. Measure the parallel resistance and the total resistance (R eq ). Attach a 1.5V battery, and proceed to measure the voltage and current across each resistor.

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