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Resistance grows with temperature

  • Thread starter Karol
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  • #1
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Homework Statement


The copper windings in an electric motor have a resistance of 54[Ω] at 200.
Later the resistance was 60[Ω], what is the temperature

Homework Equations


$$R_1=R_0(1+\alpha t_1)$$
α=0.00393[1/0]

The Attempt at a Solution


At 00C R0 is: ##54=R_0(1+0.00393\cdot 20)\rightarrow R_0=50.06##
##60=50.06(1+0.00393\cdot t_2)\rightarrow t_2=50.5^0##
It should be t2=2860C
 

Answers and Replies

  • #2
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And your question is what?
 
  • #3
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If i am right and the book is wrong.
 
  • #4
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Your math looks good. Books have been known to be in error.
 
  • #5
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Thanks and now i saw i read the wrong answer in the book, but thanks anyway for the effort
 

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