parallel inductance

Discussion in 'Homework Help' started by bujak18, Jan 20, 2009.

  1. bujak18

    Thread Starter Active Member

    Nov 12, 2008
    49
    0
    what is the inductance of a 5-mH inductor and a 7-mH inductor connected in parallel?

    need exact answer in SIMPLE TERMS if possible!!!

    thanks
    BUJAK18:p
     
  2. KL7AJ

    AAC Fanatic!

    Nov 4, 2008
    2,040
    287

    Assuming there is no MUTUAL inductance, the inductance of parallel inductors is the same as for parallel resistors: 1/(1/L1 + 1/L2)

    Eric
     
  3. bujak18

    Thread Starter Active Member

    Nov 12, 2008
    49
    0
    so the answere is the formula?

     
  4. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Yes the answer is the formula if the problem does not say anything about mutual inductance.
     
  5. studiot

    AAC Fanatic!

    Nov 9, 2007
    5,005
    513
    The answer is that you are expecting us to do your homework for you.

    I haven't seen any of your own working in this or your other thread.

    Nor am I impressed by your short form English.

    You received a full numeric answer to your last homework question, but I see no thanks, only complaint.

    If you are seriously studying basic circuits you could work out some of the arithmetic for yourself. This Forum is entitled 'Homework - Help', not 'Do my Homework For Me'
     
  6. Dave

    Retired Moderator

    Nov 17, 2003
    6,960
    145
    For two inductances in parallel it is, like resistances, "product over sum".

    As for general conduct, I concur with studiot's sentiments. Buck up.

    Dave
     
  7. italo

    New Member

    Nov 20, 2005
    205
    1
    Think about it what happens if you parallel capacitor they add right ? know invert that. and you got the unswer simple isn't. forget about strays these is homework.
     
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