A hob or a burner only has three useful settings: high, medium, low. High is for boiling water and searing, medium for sweating and cooking most things, low for simmering and keeping warm. The numbers on the dial change from one kitchen to the next, but what the pot does never changes, and the pot is what you should watch.
Watch what is happening in the pot, not the dial. Loud sizzling and a little smoke: that is high. Gentle sizzling: that is medium. Barely a few small bubbles: that is low.
Nothing. It is a glance into the pot, and a reflex that comes in a few meals.
It sticks or burns: it was too high, or the pan was empty for too long. Turn it down, add a little water or fat, and scrape the bottom with the spatula, that is flavour. It boils instead of browning: it was too low or the pan too full. Turn it up, and cook in two batches. The rice or the sauce boils over: turn down to low, and leave the lid ajar.
Rice by absorption. It goes through the three levels in twenty minutes: high to get the boil going, low to cook covered, off to rest.
Very easy
Easy
Easy
Very easy