# 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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3. 👁 643
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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2. 👎 0
posted by Me and I

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