Homework Help: Physical Science

Posted by Mandi on Monday, March 24, 2008 at 10:28pm.

Hello,
Can some one please tell me if I have the correct answer?
Thank You

my answer: B

When an electron is displaced in a semiconductor, the hole that's left behind is?

A. attracted to the negative terminal of the voltage source

B. incapable of carrying a charge

C. attracted to the anode of the voltage source

D. considered an impurity in the crystal

Physical Science - bobpursley, Monday, March 24, 2008 at 10:53pm
No. The hole a net positive charge, and it migrates toward the negative source.
- Physical Science - tory, Monday, March 24, 2008 at 11:14pm
  if you are a astronaut and you got to a planet with no magnetic field and you have no supplys all you have is 2 bars 1 magnitized and 1 is not how do you tell which 1 is magnitized and which isnt

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