I connected a potentiometer to my DC power supply (max 1A, 12V), and then connected a motor to the variable voltage side of potentiometer as well.
The potentiometer is just 1K.
When I tried using some china madeChina-made motor (RS-545) there appeared sparks and red light and subsequently burning smell coming from potentiometer as it near the 12V range. Why Why is it so?
Is it caused by back emfEMF?