Physics

What is the equivalent resistance of a parallel circuit with a 5.0 kΩ resistor, a 2.5 kΩ resistor, and 10.0 kΩ resistor?

A. 0.10 kΩ

b. 0.83 kΩ

c. 10 kΩ

d. 1.4 kΩ

e. 18 kΩ

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  1. Req
    =1/(1/R1+1/R2+1/R3+...)

    So, with 3 resistors,
    Req
    =1/(1/5+1/2.5+1/10)
    =...

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    posted by MathMate
  2. 1/R = 1/5 + 2/5 + 1/10 = (2+4+1)/10 = 7/10
    so R = (10/7) k Ohms =1.44 k Ohms

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    2. 👎 0
    posted by Damon
  3. thx, MathMate and Damon :)

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    posted by Me and I

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