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OpenStudy (anonymous):
Medal to best explanation! If R is the total resistance for a parallel circuit with two resistors of resistance r1 and r2, then 1/R=1/r1 +1/r2. Find the resistance, r1, if the total resistance R is 20 ohms, and r2 is 75 ohms. Round your answer to the nearest ohm if necessary.
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OpenStudy (anonymous):
Nevermind I found it.
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