1. Set up your circuit board with a battery, switch, and a bulb

2. Record the following data into your notebooks:
1) Voltage of battery:
2) Voltage drop across the closed switch:
3) Voltage drop across bulb:
Explain your answers for 2 and 3.

3. Make a break in your circuit somewhere and use a paperclip to bridge the gap.
Measure the voltage drop across the paper clip. Why does it have a small value?
Explain why the light does or does not light.

4. Set up your circuit board with a battery, switch, bulb, and pot meter (variable resistor)

5. Make the first pot dial setting 0 and take a reading.
Make the last pot dial setting the MAX where you can see the bulb light a little and take a reading.
Use two intermediate values for the middle two rows and take readings.
Explain your results using your knowledge of electricity.

6. Using a meter stick and some estimation of the circuit length, calculate how long it takes for an electron starting at the - terminal on the battery to make a complete trip and reach the + terminal.
Use 0.01 cm/s as the electron drift velocity.

7. In your notes:
Why does the light bulb light virtually instantly when you close the circuit if the electron drift is so slow?