In-Lab Tasks:

The In-lab task asks you to breadboard the circuit shown in figure 15 and then to use a DMM to make current and resistance measurements on the circuit. Your lab book's description of the IN-LAB task must include the following:

1. A description of what happened during the IN-LAB task. This is a description of what you did. If things did not work out and you had to make a change, go ahead and write this down as well. This description is a record that you can use later to reminder yourself of what actually occurred in the lab.
2. Construct the circuit on the breadboard shown in figure 15. You should use the following steps
   1. Hook up the power buses to the breadboard terminals to the power rails.
   2. breadboard the resistive network
   3. connect power supply to the breadboard.
   Your wiring must be neat with components and wires lying flush against the breadboard and arranged in a rectangular manner. You will be asked to rebuild the circuit if these guidelines are not followed.
3. Use the DMM to measure the resistance of the variable resistor. You can change this resistance by turning the knob on the component. For at least 10 different resistances, measure the current going through the diode and observe the brightness of the diode. Make qualitative observations about the LED's brightness as a function of current.