Lab 2: Resistors and Ohm's Law - Voltage-Current Characteristics
Purpose:
The purpose of this lab was to exercise our knowledge of Ohm's Law and how to use it. This was done by utilizing a resistor (100 Ohms), a multimeter, the analog discovery device, and a power supply.
 |
| Tools used in experiment |
Procedure:
By setting up a simple circuit that connected the power supply to the resistor, we could measure the amount of voltage and current going circulating. This would help us understand and confirm Ohm's law a bit better.
 |
| Schematic for circuit to test Ohm's Law |
After organizing the circuit, we had to get an actual reading of the resistance value of the resistor to use in calculations. Using the multimeter set to read Ohms, we verified that it was within reasonable tolerances for use (100.3 Ohms).
 |
| Measuring actual resistance |
We tested a variety of Voltages from the power supply (these were already set on the supply, but we used a multimeter to test the applied levels) and made sure to read the currents that correlated (shown below).
 |
| 2.97V |
 |
| 4.51V |
 |
| 5.99V |
 |
| 7.44V |
 |
| 8.98V |
 |
| 11.98V |
Data:
From those readings we were able to put together a table for analyzing:
Summary:
By setting up a scenario in which a rated resistor was put under a specific level of voltage, we could measure and make a data analysis of its behavior. Using Ohm's Law:
A resistance can also be found and verify our trust in the equation. Further proof of this is seen in the linear trendline in the graph above.
No comments:
Post a Comment