|MLA Citation:||Bloomfield, Louis A. "Question 1245"|
How Everything Works 21 Oct 2017. 21 Oct 2017 <http://howeverythingworks.org/print1.php?QNum=1245>.
But as soon as the liquid water is gone (and, fortuitously, the rice is fully cooked), there is nothing left to keep the heating element's temperature from rising. As more electric energy enters the element and becomes thermal energy, the element gets hotter and hotter. A thermostat, probably a bimetallic strip like that used in most toasters, senses the sudden temperature rise. It releases a switch that turns off the electric power to the rice cooker.