# Lab_5 - The voltage is measured for five different values...

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Introduction: An electric current is a flow of charge. As the current flows through a circuit, it goes from a region of high potential to low potential, which is then transformed into different forms of energy. Objective: Experiment 1: In this experiment I will be be showing that the voltage is proportional to the length of the wire. Experiment 2: In this experiment I will confirm that the current is inversely proportional to the resistance and will also determine the resistivity of the wire. Experiment 3: The object of this experiment is to determine R i by measuring the voltage and the current across the cell. Experiment 4: In this experiment I will measure the emf of a lemon. Methods and Apparatus: Experiment 1: The circuit below is built.
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Unformatted text preview: The voltage is measured for five different values of resistance. A graph will be plotted which will be used to see if voltage is inversely proportional to length. Experiment 2: The circuit below is built and the current is measured for five different values of length. From the plotted graph, I will verify that current is inversely proportional to length. From the data, I will be able to determine ρ. Experiment 3: The circuit below is built and the voltage of the 1.5 V cell is measured by changing the current to 0, 0.2, 0.6, and 0.8 Ampere. A graph is plotted which enables R i to be found. Experiment 4: The circuit below is built and the emf of a lemon is measured....
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## This note was uploaded on 04/08/2008 for the course PHYS 18b taught by Professor Wellenstein during the Spring '08 term at Brandeis.

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