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Author Question: The Hall effect can be used to do all of the following EXCEPT a. measure the density of charge ... (Read 12 times)

burton19126

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on: Jul 28, 2018
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.

Question 2

The electrical resistivity of a semiconductor
 
a. becomes quite large at high temperatures.
  b. becomes quite large at low temperatures.
  c. is fairly independent of temperature.
  d. is much lower than the resistivity of a metal at room temperature.


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Dominic

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Reply #1 on: Jul 28, 2018
Answer to Question 1

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

Answer to Question 2

b.
The electrical resistivity grows quite large at low temperatures


burton19126

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

strudel15

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Reply 3 on: Yesterday
Gracias!

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