Question 1173917
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To solve this problem, one needs to assume the applied voltage is constant, or the voltage drop across the resistance to be measured is constant while the resistance varies.  Because a LINEAR circuit would not behave this way, you should NOTE that this implies the circuit is non-linear (contains digitial logic, diodes, transistors, or other nonlinear components):  <br>  

I = V/R<br>
where
I = current in Amperes
V = voltage in Volts    
R = resistance in Ohms<br>

We can find the applied voltage from the given data:
0.25 = V/8
V = 2 Volts<br>

R = V/I = 2/1.2 = 1.67 ohms