Exploring the Exciting World of Resistance and Potential Difference!
How can we investigate how the resistance of a single lamp changes with potential difference across the lamp?
What is the method to explore this relationship?
To investigate how the resistance of a single lamp changes with potential difference
Connect the lamp in series with a battery and measure the potential difference and current passing through the lamp.
Are you ready to dive into the fascinating world of resistance and potential difference? This experiment allows us to uncover the relationship between these two important electrical properties in a single lamp. By following the method outlined below, you can conduct your own investigation to explore how the resistance of the lamp changes with the potential difference across it.
Firstly, gather your materials including a single lamp, a battery, a voltmeter, and an ammeter. Connect the lamp in series with the battery, ensuring that the circuit is complete. Measure the potential difference, V, across the lamp using the voltmeter placed in parallel with the lamp. Simultaneously, measure the current, I, passing through the lamp using the ammeter placed in series with the lamp.
Repeat these measurements for different potential differences across the lamp, ranging from low to high values. By recording the potential difference and current values for each measurement, you can plot a graph of potential difference (V) against current (I). This graph will allow you to visualize the relationship between these two variables and determine the resistance of the lamp.
With the help of Ohm's law (R = V/I), you can calculate the resistance of the lamp for each data point on your graph. By analyzing the data and observing the trend in the graph, you will gain valuable insights into how the resistance of the single lamp changes with the potential difference across it.
Get ready to embark on an electrifying journey of discovery as you explore the intricate relationship between resistance and potential difference in a single lamp!