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April 18, 2015

April 18, 2015

Posted by **n** on Wednesday, November 7, 2012 at 11:51pm.

- math -
**Steve**, Thursday, November 8, 2012 at 12:04amvaries inversely means there is a constant k such that

ir = k

we are told that i=2 when r=115:

2*115 = 230 = k

so, when i=5,

5r = 230

r = 46 ohms

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