Block+C+Group+4

Block C Group 4

1. Question - How does light intensity affect the electricaloutput of PV Cell?

2. Hypothesis - If more light intensity is focused on a PV cell, then the more volts the PV cell will generate.

3. Materials -
 * 2 Alligator Clips
 * 1 Multimeter
 * One big lamp
 * 1 25W bulb
 * 1 75W bulb
 * 1 100W bulb
 * 1 PV Cell
 * 1 Foot Candle Light Meter
 * 1 Meter Stick
 * 1 Ring Stand

4. Prodecure -
 * 1) With 25W bulb in lamp, plug lamp in 48 CM away from table.
 * 2) Attach Alligator clips to negative and postive side of PV Cell.
 * 3) Attach other end of Alligator Clips to Multimeter.
 * 4) Turn lamp on
 * 5) Place light meter underneath lamp
 * 6) Record readings
 * 7) Place PV Cell under lamp
 * 8) Read recordings from multimeter and record.
 * 9) Repeat steps 5-8 with 75W and 100W bulb.

5. Table -
 * || 25W || 75W || 100W ||
 * Light Meter || 160 Fc || 635 Fc || 900 Fc ||
 * PV Cell || 5.1 V || 5.6 V || 5.5 V ||

6. Graph - See Paper graph

7. Conclusion - With the recordings and results based upon the graph, in conclusion, the more wattage that is used for light intensity, the farther the light travels. When it comes to how light intensity affecting the electrical output a PV cell, the more light intensity that is recieved on the PV Cell, the more voltage output is available in the PV cell. This lab shows on a small scale how much voltage can be recieved from the sun on a solar powered house.

8. Problems with the Lab - Set up wasnt as accurate as it could have been. The postion from the lamp to the PV cell and Light Meter could have been inaccurate. Should have taken averages from the readings of the Multimeter and the PV cell and averaged out,instead of taking a rough estimate of the readings. A designated time period of leaving the Light meter and PV cell underneath the lamp would may have affected the lab.