Graphing Resistivity

The video tutorial explains how to determine the resistivity of nichrome wire using a variable power supply. It covers the necessary data collection, including measuring electric potential difference and current, and calculating the cross-sectional area of the wire. The tutorial also discusses the importance of maintaining a constant temperature to ensure accurate resistivity measurements. The process involves plotting a graph with electric potential difference times cross-sectional area on the Y-axis and current times length on the X-axis. The slope of the best-fit line represents the resistivity of nichrome. The video concludes with a discussion on the results and the significance of the Y intercept.

What is the role of the alligator clips in the experiment?

Describe the relationship between electric power and electric potential difference in this experiment.

What is the calculated resistivity of nichrome based on the experiment?

Discuss the reason for the Y intercept not being zero in the graph.