Question

2) A resistor of unknown resistance is connected to a power supply capable of producing electrical potentials from 0 volts to 10.0 volts. A student connects an ammeter in series with the power supply and resistor so that he can record the current flowing through the system. He produces the chart shown below. Potential Difference vs. Current M Potential Diff (V) 1.0 0.01 0.02 0.03 0.04 2.0 Current (A) 0.008 0.018 0.026 0.035 0.047 Current (A) 4.0 a. Label the diagram, naming the different components in the circuit built by the b. Plot a graph of the data given in the chart. C. Draw a best-fit line for this plot. Find the slope of the graph. d. Explain what this slope represents. e. This resistor clearly obeys Ohm's Law, because it shows a direct relationship between voltage and current. Draw a line on the graph to represent a resistor that does not obey Ohm's Law.

Answer 1

Battery Ammeter I graph for resistor lit Resistor Chower supply w a that does not obey ohm I elohe = 0.026–0-008 3-1 = 0.009 2 Potential difference slope gives value - Current (A) resistance of resistor connected in circuit Va I, constant of proportion = resistance =qmr Ohm's law

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