Mechanics
5D - Resistance
5B - Electric Fields and Potential
5E - Electromotive Force and Current
5H - Magnetic Fields and Forces
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5D 10.10 - Voltage Divider:
Demonstrates: Potential affected by resistance. Description: A rheostat is hooked to a volt meter to show resistance. |
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5D 10.30 - Rheostats:
Demonstrates: Resistance. Description: Controls voltage and current. |
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5D 20.10 - Resistance as a Function of Temperature:
Demonstrates: Resistance. Description: A small bulb is attached to powersupply by a coil of copper wire. After coil of wire is placed in liquid nitrogen the bulb becomes brighter due to decreased resistance. Put coil in boiling water to increase resistance. |
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5D 30.10 - Grass Seed Electric Field:
Demonstrates: Electrical field lines. Description: Seeds are placed in a culture dish with pieces of aluminum foil on bottom. When current is applied they align to the field. |
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5D 30.15 - Grass Seed Electric Field with Van de Graaff Generator:
Demonstrates: Electrical field lines. Description: Seeds are placed in a culture dish with pieces of aluminum foil on bottom. When current is applied they align to the field. |
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5D 40.10 - Jacob's Ladder (Lightening Rod):
Demonstrates: High voltage phenomenon. Description: A high voltage power source is used to create "lightning" arcs. |