I have a 10k poti. I use it as a variable resistor by soldering two of the three terminals. It is connected to a 1/4 watt 220 ohm resistor in series(this is the load). The voltage across this circuit is 12V DC.
Is the poti safe even it is set to zero ohm?
Would 220 ohm prevent it to burn in this case?
If so, what should be the quantative method to calculate the minimum value of series resistor which would prevent this poti?