1. PIC NEEDED

2. How can you use solar cells to produce the most energy possible?
Feb 26 / Act D 68
Photovoltaic Cells
LEARNING TARGET: I can explain what circuit design for solar cells maximizes energy output.
CH Q
How can you use solar cells to produce the most energy possible?
VOCAB:
photovoltaic
"photo" = light "volt" = voltage
making electricity directly from light

3. PROCEDURE AND DATA
MATERIALS:
PROCEDURE: Read on pg. D and summarize
DATA: Design investigation(s) in journals
Observations of each investigation

4. Conclusion from the data?
What is the relationship between angle of light and amount of voltage?

5. POST DISCUSSION
Solar Photovoltaic Power:
Advantages Disadvantages
costly to set up
(pays over time)
works only when there's light (must be stored for dark times)
not very powerful for surface area used
(though getting better)
no pollution
low maintenance
Sun "forever"
"off-grid" easy
can add to grid's
efficiency

6. How would you make motor spin fastest?
when cell was pointed directly at Sun – maximizing “concentration” of light on surface area

7. Two solar cell setup looks like…. Why is two better than one?
better than one - when in series -because the electrical power produced was added together

8. ANALYSIS
- Discuss and answer Q 1-3 on pg. D 88
ANS CHALLENGE Q
How can you use solar cells to produce the most energy possible? A:
perpendicular (right) angle
no interference (clouds/smog, etc.)
maximum surface area and hours
HOMEWORK
Catch up on Journals – Complete Analysis Q’s