Healthy Fats. A classic peanut butter and jelly sandwich has 18 grams of fat. This could be a good chunk of your total daily fat, depending on how many calories you consume. The American Heart Association recommends limiting fat to less than 25 to 35 percent of your total calories.
A rheostat is an electrical device that is used to vary voltage across a network to which it is connected. Since resistance is actually responsible for voltage drop, so by varying the resistance, it is possible to obtain different values of voltage.
A rheostat is a resistor with variable resistance.There are many type of rheostat,involved of a rotary-type rheostat and a sliding rheostst.I dunn know much about the rotary-t â¦ ype rheostat but I can tell u how does a sliding rheostat work. The purpose of the rheostat is use to change the resistance of the circuit. The rheostat is use to define Ohm Laws th â¦ e 2nd situation is use to find out what the fixed resistor's resistance. 3rd purpose: used to control the resistance of circuit. eg Radio.