Block+A+Group+5

Block A Group 5 Zack k, Taylor s, Meagan m,

1.Question: How does the Distance From a Light source Affect the Electrical Output of a PV Cell?

2. Hypothesis: If the light is closer to the PV cell, then the electrical output will be higher.

3. Materials Needed:
 * Light source
 * Lightbulb (40 watt)
 * Meterstick
 * PV cell
 * Alligator clips
 * Multimeter

4. Procedure: 1. Connect the aligator clips, multimerer, PV cell. 2. Place the PV cell 20cm from the light. 3. Turn on the light, keep it there for 1min, then record the volts. 4. Move the light up to 40cm away, wait 1min, record again. 5. Move the light up to 60cm away, wait 1min, record again. 6. More the light one last time to 100cm away, wait 1min and record again.

5. Data Table: Volts from PV cell. from light || 20cm || 40cm || 60cm || 80cm |||| 100cm || 6. Graph: On paper
 * Cm away
 * Volts || 5.63V || 5.20V || 4.90V || 4.84V |||| 4.72V ||

7. Conclusion: The closer the light source is to the PV Cell the higher the output was. This relates to using a real photovoltaic panel a your house for energy by showing how different distances will effect the amount output by the PV Cells on your house.

8. Problems: Some of the problems were not being exact on the minute. What we could change is keeping a steady hand in holding up the light. Also, we could have an immediate reading of the PV cell.