Block+A+Group+3

Block A Group 3

Thomas Russell, Ryan Prater, Aaron Whitacre

1.) __**Question**__: How does light intensity affect the electrical output of a PV Cell?

2.) **__Hypothesis:__** If you increase the intensity of light, then the electrical output of a PV Cell will increase.

3.) **__Materials:__**
 * 3 light bulbs- same watts
 * Multimeter
 * 2 aligator clips
 * 1 PV Cell (solar plate)
 * Light intesity meter (Foot Candle Light Meter)
 * Meter Stick (centimeters **NOT** inches)
 * Stop Watch
 * 3 Ring Stand
 * 3 Light Bulb Holders

4.) **__Procedure:__** Step 1.) Connect multimeter to Pv cell using alegator clips. Step 2.) Set distance between lights and PV cell (panel) Step 3.) Turn light 1 on for one min. (all three lights are 35cm away) Step 4.) Add one light and record for one min. Step 5.) Add the last light and record for another min**.**

5.)**__Data Table:__** Data Table of PV Cell
 * Bulbs || 1st Light bulb || 2nd Light bulb || 3rd Light bulb ||
 * Foot Candles || 160 || 240 || 340 ||
 * Electrical Output || 5.50 || 5.62 || 5.61 ||

6.)**__Graph:__** (On graph paper)

7**.)__Conlusion:__**

The more light the PV Cell received the more energy it had. If we had a solar panel hooked up to a house then you could save more energy by using the suns rays.

8.)**__Problems:__** The last light we had turned on with the other 2 lights ended up being 0.01 lower than the first 2 lights that were on. Next time our group would try different times and space the timing of turning on the lights and different bulb sizes__.__