I have 9 potentiometer with the specs: 10k Ohms and 0.5W
I'm using an Arduino Mega, and using it's 5V port output to power these potentiometers in series, and I saw online that the max current this board can supply is ~450 mA
So, if there are 9 10k Ohm resistors in series, the total resistance in the circuit is 90k Ohms. So, using ohms law I=V/R = 5/90000 = 0.0556 mA current will flow through the potentiometers?
And to find the maximum current each potentiometer can take, if I use I = sqrt(P/R) = sqrt(0.5/10000) = 7.07 mA.
So since only 0.0556 mA will flow through these potentiometers and each potentiometer can take up to a maximum of 7.07 mA (before overheating?), is this circuit totally perfect and all my calculations are correct?