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Equivalent Resistance

  1. Mar 1, 2008 #1
    1. The problem statement, all variables and given/known data
    Find equivalent resistance in:

    2. Relevant equations

    3. The attempt at a solution
    r_eq^-1 = (30+60)^-1+(40+10)^-1
    this is wrong.
    do i need to include 8 and 4 ohm resistors
  2. jcsd
  3. Mar 1, 2008 #2


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    Science Advisor

    Based on your drawing your equation looks correct. What answer did you get?

    You can check your answer against this equation's results:

    [tex]R_{eq} = \frac{R_1 \cdot R_2}{R_1 + R_2} [/tex]

    R1 would be 90 since 30 and 60 are in series and R2 would be 50 for the same reason.

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