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Author Question: What is the resistance of a wire made of a material with a resistivity of 3.2 10-8 W m if its ... (Read 126 times)

TVarnum

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on: Jul 28, 2018
What is the resistance of a wire made of a material with a resistivity of 3.2  10-8 W  m if its length is 2.5 m and its diameter is 0.50 mm?
 a. 0.16 W
  b. 0.10 W
  c. 1.28 W
  d. 0.41 W
  e. 0.81 W

Question 2

A wire (length = 2.0 m, diameter = 1.0 mm) has a resistance of 0.45W. What is the resistivity of the material used to make the wire?
 a. 5.6  10-7 W  m
  b. 1.2  10-7 W  m
  c. 1.8  10-7 W  m
  d. 2.3  10-7 W  m
  e. 7.1  10-7 W  m


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Mochi

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

D

Answer to Question 2

C


TVarnum

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Reply #2 on: Jul 28, 2018
TY


Mochi

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Reply #3 on: Jul 28, 2018
You're welcome


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