PURPOSE: To demonstrate the nature of the Hall effect.

DESCRIPTION: A current is passed through a semiconducting strip. As a magnet is brought near the strip the meter records a potential transverse to the direction of the current. Changing from n-type to p-type semiconductor reverses the sign of the transverse potential.

SUGGESTIONS:

REFERENCES: (PIRA 5M10.10)

EQUIPMENT: P-type and n-type germanium samples on projection plates, 50 mV projection meter, 5-volt power supply, and small bar magnet.

SETUP TIME: 5 min.