Contents
Cal Poly Pomona
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Physics Demonstrations at Cal Poly Pomona

Demo Index:
    EM-H-HM
Pira Index:
    5H40.53
Title:
    HOMOPOLAR MOTOR
Description:
    Demonstrates that
Equipment:
    1. Screw
    2. Magnet
    3. Battery with wire
Procedure:
    1. Hold battery as shown or place in 3-finger clamp and place on lab stand.
    2. Bring in wire and touch outside of magnet. Watch it spin!


    Discussion:
    Why does it spin?
    Which direction should the screw spin?
    Why?
    What direction did the motor spin?
    Why?