The Hall effect can be used to do all of the following EXCEPT

a. measure the density of charge carriers.
b. measure the sign of charge carriers.
c. prove that some metals and semiconductors use hole conduction.
d. generate a steady current perpendicular to the current flowing through a wire.
e. measure magnetic fields.


b.
The Hall effect can be used to measure the sign of charge carriers by noting the sign on the hall potential difference VH.

Physics & Space Science

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