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Homework Help: Unlimited resistors to build a 5 watt circuit with resistance of 10 ohms.

  1. Mar 21, 2012 #1
    Okay well my issue is from a basic problem. The problem is you are given an unlimited number of 10 Ohm resistors. They can only handle 1 watt of dissipation and you need to create a circuit that has a total resistance of 10 Ohms, and has a power dissipation of 5 Watts. They are actually looking for the minimum number of resistors that are needed to create this process. So I was able to get that the minimum is 5 resistors but as that turns out it's not; it's actually 9 resistors. Apparently my answer is the maximum and 3 is the minimum and then it is squared. I get that part but not how they went from 5 resistors to 3 resistors.
  2. jcsd
  3. Mar 21, 2012 #2


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    Hi Jonnyto! Welcome to PF! :wink:

    Show us your full calculations, and then we'll see what went wrong, and we'll know how to help! :smile:
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