Conductivity analyze conductivity. Experiment with conductivity in metals, plastics and photoconductors. See why metals conduct and plastics don't, and why some materials conduct only when you shine a flashlight on them.

Sample Learning Goals
1. Recognize that the battery is the driving force in a circuit.
2. Explain the difference in conducting behavior between metals, plastics, and photoconductors in terms of the difference in the structure of energy levels.
3. Explain why shining light on a photoconductor causes it to conduct.

Requirements:
* Java

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