Interactive, scaffolded model
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Students explore the role of electron voltage and density on electric current. They compare the movement of electrons in a conductor and an insulator. They derive Ohm’s Law from their observations. They apply their understanding to circuits, the working of an incandescent light, and a fuel cell.
Students will be able to:
• Explain how voltage is the driving force behind electron movement.
• Define electric current as the number of electrons flowing through a wire over a given period of time.
• Explain how conductivity and resistivity relate to electric current.
• Infer the relationships between current, voltage, and resistance as described in Ohm’s Law (I = V / R).
• Explain how electricity can be converted to other forms of energy.
Additional Related Concepts
Fermi Lab's ARISE Project suggests the following enhancement to the SAM unit:
fuel cell, electron
Created by CC Project: SAM using Molecular Workbench