How to Carry Out an Experiment to Investigate the Relationship Between Resistance and Wire Length

The video tutorial covers a physics experiment on measuring the resistance of a microwire as its length changes. It begins with an overview of the required equipment and circuit setup, followed by a discussion on the independent and dependent variables, as well as the controls needed to ensure a fair test. The procedure for conducting the experiment is detailed, including safety precautions. Finally, the video explains how to analyze the data using a scatter graph and draw conclusions about the proportionality between wire length and resistance.

What does a straight line graph through the origin indicate about the relationship between resistance and length of wire?

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How can you determine the resistance per unit length of the wire from the graph?

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