Total Resistor Power (W)

Discussion in 'General Electronics Chat' started by superway, Aug 30, 2016.

  1. superway

    Thread Starter Active Member

    Oct 19, 2009
    128
    0
    Hello
    On my attachment below, there 2 drawings A and B. They are both connected in series/parallel. What is the difference between 2 drawings?
    The total resistor of each is 0.2 Ohm, but are they the same Total Power ?
    Please help
    Thanks
    Ken
     
  2. wayneh

    Expert

    Sep 9, 2010
    12,151
    3,058
    In both cases, the current through each resistor is the same. So the power dissipated by each resistor is the same.
     
  3. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    7,394
    1,606
    Theoretically given identical zero tollerance resistors the voltage across the extra connections is zero both ways so they are identical.

    When you factor in tollerance it gets messy since you can have a lower resistor paralleled with a higher resistor, and current will flow thru the extra connections. Not much, so generally they still work very similarly when they are still pretty close in tollerance.

    Hopefully one of the spice guys will wander by and give some solid numbers here.
     
  4. ronv

    AAC Fanatic!

    Nov 12, 2008
    3,292
    1,255
    It's very possible I did it wrong, but I don't see much difference. But a little.
    Sorry the lines aren't very dark.
     
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