What is the blood resistivity if a 9.0 v potential difference causes a 240 μa current through the blood in the vein?

38k ohms The conductor in this case may be biological, but knowledge of biology isn't needed to solve the problem. Using ohm's law I = V/R we can calculate any of the 3 values, when given the other 2. First, substitute the known values into the formula. I=V/R 0.000240 = 9 / R Now solve for R. First, multiply both sides by R 0.000240 R = 9 And divide both sides by 0.000240 R = 37500 So the blood resistivity in this example is 37500 ohms. Rounding to 2 significant figures gives 38k ohms.

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