Difference between revisions of "Lab 1 TF EIM"
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= Internal resistance= | = Internal resistance= | ||
| − | Measure the internal resistance of your power source by graphing the potential difference on the x-axis and the current on the y-axis for several values of the resistance <math>R_L</math> shown in the circuit below. Begin with R_L = 1k\Omega and then decrease it by a factor of 5 for each subsequent measurement. You can use a volt meter to measure the current and potential difference. | + | Measure the internal resistance of your power source by graphing the potential difference on the x-axis and the current on the y-axis for several values of the resistance <math>R_L</math> shown in the circuit below. Begin with <math>R_L = 1k\Omega</math> and then decrease it by a factor of 5 for each subsequent measurement. You can use a volt meter to measure the current and potential difference. |
Revision as of 03:10, 22 October 2010
Kirchoff's Law
Construct the circuit below.
Enter the values of the DC voltage and Resisters that you used.
| Variable | Measured Value |
Enter the measured and predicted quantities in the table below
Use Kirchoff's laws to predict the current values and compare them to your measurements by filling in the table below.
| Variable | Measured Value | Predicted Value | % Difference |
Internal resistance
Measure the internal resistance of your power source by graphing the potential difference on the x-axis and the current on the y-axis for several values of the resistance shown in the circuit below. Begin with and then decrease it by a factor of 5 for each subsequent measurement. You can use a volt meter to measure the current and potential difference.