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Author Question: When a voltage is applied across a p-type semiconductor, the holes A) are destroyed. B) move ... (Read 44 times)

dejastew

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on: Jul 29, 2018
When a voltage is applied across a p-type semiconductor, the holes
 
  A) are destroyed. B) move toward the negative electrode.
  C) do not move. D) move toward the positive electrode.

Question 2

If the efficiency of a reversible engine is 28, what is its COP (performance coefficient) operated (a) as a refrigerator, and (b) as a heat pump?
 
  What will be an ideal response?


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johnharpe

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Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

(a) 2.6 (b) 3.6


dejastew

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


johnharpe

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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