The Hall effect is used in solid-state Physics to measure
A. ratio of charge to mass
B. magnetic susceptibility
C. the sign of the charge carriers
D. the width of the gap between the conduction and valence bands
E. Fermi energy
(GR8677 #50)
Solution:
Hall effect is the production of voltage difference (Hall voltage) across a current-carrying conductor under the influence of a magnetic field.
Hall voltage can be used to reveal the sign of the charge carriers.
Answer: C
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