VI Characteristics: Investigating the Relationship between Current and Potential Difference in a Light Bulb

In this video, Matt demonstrates an experiment to investigate the relationship between current and potential difference across a light bulb. He replaces a resistor with a light bulb in a circuit, measures voltage and current, and records the data. Matt then reverses the current direction to observe changes. The data is graphed, showing a non-linear relationship, indicating that the bulb's resistance increases with potential difference. The experiment concludes that the bulb behaves the same regardless of current direction.

Discuss the shape of the graph plotted from the results and what it indicates about the circuit.

What is the significance of the resistance values calculated during the experiment?

How does the direction of the current affect the behavior of the bulb according to the experiment?

What conclusion does Matt draw regarding the resistance of the bulb as the potential difference changes?