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1. The problem statement, all variables and given/known data

What is the value of resistor R in Figure Ex31.21, in which ΔV = 5.0 V and I = 62 mA?

(Image Attached)

2. Relevant equations

RI=V

3. The attempt at a solution

My attempt at the solution is literally solely the equation above. I can't see any other way to angle it. I've done it a few different ways (all using the above equation) and keep getting the answer 80.6. Can anyone help me on this one?

Thanks in advance!

~Phoenix

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# Value of a Resistor

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