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Author Question: The temperature coefficient of resistivity for copper is 0.0068C-1. If a copper wire has a ... (Read 128 times)

SGallaher96

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on: Jul 29, 2018
The temperature coefficient of resistivity for copper is 0.0068C-1. If a copper wire has a resistance of 104  at 20C, what is its resistance 80C?
 
  A)
 
  192  
  B)
 
  42  
  C)
 
  71
  D)
 
  161  
  E)
 
  146

Question 2

As the frequency of the ac voltage across a capacitor approaches zero, the capacitive reactance of that capacitor
 
  A)
 
  approaches zero.
  B)
 
  approaches infinity.
  C)
 
  approaches unity.
  D)
 
  none of the given answers


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kjohnson

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

E

Answer to Question 2

B


SGallaher96

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Reply 2 on: Jul 29, 2018
Wow, this really help

cici

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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