Lab-Analog Input-Try Other Variable Resistors
I try another variable resistor: photoresistor.
There is no voltage divider circuit in photoresistor, so we have to make it by ourselves.
Connected the photoresistor with a fixed resistor and hook up a wire from Analog pin 3 to the point two resistors met. If you change different resistor, for example from 10k to 1k, there would be more current.