Chapter 1. Physics 2212, Lab 7: Resistance

_activity_type_title: Physics 2212, Lab 7: Resistance _sequenced_sections: false _restore_last_viewed_section: false

Lab 7, Experiment 1. 330 Ω Resistors

Resistance Offset
Resistor Value Average So Far Standard Deviation So Far Value Average So Far Standard Deviation So Far
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Lab 7, Experiment 2. Light Bulb

Slope of ΔV vs. I graph:

Discussion

What was the average resistance of a 330 Ω resistor? Don't forget units and the standard deviation! (Why have we used standard deviation, rather than standard error, here?) These resistors are sold as 330 Ω ± 5% — are the manufacturer's claims valid?

What was the average offset (y-intercept) for your resistor measurements? Compare this to the value predicted by theory—do they agree? If they do not agree, what systematic errors might have caused the observed difference?

What does the slope of the ΔV vs. I graph for your light bulb represent? Why?

Remember the importance of Academic Integrity in the Physics Lab.