Vernier Software and Technology
Vernier Software & Technology

Resistance and Ohm's Law


When designing or using electronic devices, we often need to know how changing the voltage across the device will affect the current flowing through it.

For example, what will happen to the current flowing through a circuit element, such as a bulb that is part of a circuit, if we increase the voltage across it? Alternatively, what will happen to the current passing through a carbon resistor as voltage increases?


In this activity, you will

  • Compare the behavior of a flashlight bulb to that of a carbon resistor and determine whether or not these devices obey Ohm’s Law.

Software for Experiment

This experiment uses Logger Pro software for video analysis. The video for analysis is included with the lab book.

Experiment 28 from Physics with Video Analysis Lab Book

<em>Physics with Video Analysis</em> book cover

Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.

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