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Problem in auto induction .

  • Thread starter toetoe
  • Start date
  • #1
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Homework Statement


i tried to put all data in the image .

http://img136.imageshack.us/img136/7443/photokg6.th.jpg [Broken]

in the initial situation K was closed.in T = 0 ,K was opened.

give the differenciel equation of the courant.

The Attempt at a Solution



(R+r)*i + L (di)/(dt) = 0 .

my problem is that i don't know if we have to put (R+r)*i or only r*i in the differentiel equation of the courant .

thanks in advance for any help.
 
Last edited by a moderator:

Answers and Replies

  • #2
4
0
by the way,if there is something not clear in the data of the problem ,i will be happy to explain it.
 
  • #3
4
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does nobody know the solution?
 
  • #4
4
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no answer !!:(
 

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