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how to find out current in each resistors

Discussion in 'General Electronics Discussion' started by vead, Oct 18, 2015.

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  1. vead

    vead

    473
    14
    Nov 27, 2011
    Hello
    I have multimeter, breadboard and some resistors. I can connect resistors on breadboard
    I want to do some real work. I can measure voltage , current and resistance with multimeter. I have different value of resistors
    If we know two known value than we can find one unknown value ie. if we know voltage and resistance we can determine current by ohms law
    equivalent resistance = 3.28 ohms
    look both Images
    1. Is the connection on breadboard as same as show in schematic ?

    I don't understand how to find out current through the 3 ohms , 4ohms and 5 ohms resistors
     

    Attached Files:

    Last edited by a moderator: Oct 18, 2015
  2. GPG

    GPG

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    66
    Sep 18, 2015
    Calculate the total resistance of the 3 resistors. multiply by the current. this is the voltage across them. I = V/R for each resistor.Don't forget the .1Ω when calculating the current
     
    Last edited: Oct 18, 2015
  3. Colin Mitchell

    Colin Mitchell

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    Aug 31, 2014
  4. Kiwi

    Kiwi

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    Jan 28, 2013
    I am a little confused as to how someone with 274 posts over nearly four years on this forum is unable to work out this simple series/parallel resistor circuit, and can't see the errors in the breadboard.
     
  5. vead

    vead

    473
    14
    Nov 27, 2011
    Hello Kiwi
    I try to clear your confusen I thing my title selection was wrong. It should be theory vs practical
    why I am on this forum
    : because I don't understand electronics easily

    do you think that all peoples have same capability to learn ?

    if you will read the top 5 lines of my post. you will see that I want to do some practicals to know real facts that's why I posted breadboard image. I know series / parallel resistor on pages. I never tried on pcb or breadboard using multimeter

    I can solve the simple ,series / parallel circuit problem but I am trying to solve complex circuit. I have lot of doubt but I started with small one. I know the answer. I am not good in English . may be reason that I am not explaining in good way

    I always see many peoples are very good in theory but when time to prove practically. they don't know anything. I want to be a good in both theory and practical. so that's why I posted simple question
     
    Last edited: Oct 18, 2015
  6. Martaine2005

    Martaine2005

    3,492
    944
    May 12, 2015
    Hi Vead,
    My math is a complete fail. But you can't measure anything on your bread board connected like that!
    Try this in my (badly edited) Paint picture. ( there's a much better version ;) ;) )


    network1.GIF



    (mod edited image)
     
    Last edited by a moderator: Oct 18, 2015
  7. vead

    vead

    473
    14
    Nov 27, 2011
    I apologize for wrong title selection and post
    I will make some real connection on breadboard ( just learning for concept of circuit theory ) than I will ask you my doubt
    thank you very much
     
  8. davenn

    davenn Moderator

    13,833
    1,950
    Sep 5, 2009
    try that Martin

    I was busy editing the image b4 I discovered you had you one there haha
     
  9. Martaine2005

    Martaine2005

    3,492
    944
    May 12, 2015
    Hehe, thanks @davenn .
    It definitely looks neater. I only left the other resistor there to show the OP there was 6, and only 5 in his schematic.
    BTW Dave, what software is it? I might have to get it..

    Never mind Dave, I just found it..:)

    Martin
     
    Last edited: Oct 19, 2015
    davenn likes this.
  10. davenn

    davenn Moderator

    13,833
    1,950
    Sep 5, 2009
    :)
    couldn't resist doing a little edit of your post as a nice surprise since I had already altered vead's layout ;)
     
    Martaine2005 likes this.
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