Purpose
In this activity, students will investigate the principles that make electric motors possible.
Discussion
Perhaps the most important invention of the 19th century was the electric motor. You use a motor whenever you use electric power to make something move. A motor is used to start the engine of a car. Motors are used to spin compact discs. Motors are used to move elevators up and down. A list of motor applications would go on and on. But how do motors turn electric energy into mechanical energy? Let’s find out!
Required Equipment
Hand-held generator (Genecon or equivalent), connecting wires, about 50 cm of lead-free solder,
2 collar hooks (or 2 10-cm lengths of lead-free solder), about 30 cm of 1/4" diameter wood dowel,
support rod with base and rod clamp, 2 bar magnets (strong alnico magnets are recommended)
small block of wood (about 2" x 2" x 1"), 2 rubber bands, 2 D-cell batteries
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Student Worksheet Teacher Notes
