okay if that's the case then I would test circuit with 10 omhs, 15 ohms and 20 ohm resistorsdavidcoton wrote: ↑Sun Sep 09, 2018 11:50 amOK, that makes more sense. But where is the power going?

5V 0.2A is 1 Watt. 5V 2A is 10 Watts. Most potentiometers will not survive that.

In first test I will connect 10 ohms resistor then I will calculate current throw resistor

in second test I will replace 10 omhs with 15 ohms and I will calculate current throw resistor

in third test I will replace 15 omhs with 20 ohms and I will calculate current throw resistor

Main goal is to measure the current at variable resistance that's reason I am testing with different size