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August 29, 2015

Homework Help: Algebra 2

Posted by Nancy on Thursday, April 5, 2012 at 2:19pm.

A resistor has a resistance of 15 ohms. What size of resistor, (r2), should be connected in parallel with it to obtain a resistance of 7 ohms.
Use 1/R=1/r1+1/r2.
r2= ohms?

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