Electrical energy is continuously obtained.
The energy obtained from food is measured in units called calories. A calorie is a unit of energy that represents the amount of heat required to raise the temperature of one gram of water by one degree Celsius.
Most energy obtained from water is converted from the kinetic energy of flowing water through turbines. The force of the water turning the turbines generates mechanical energy, which is then converted into electrical energy through a generator.
Solar energy is obtained through the use of solar panels which capture sunlight and convert it into electricity. These panels contain photovoltaic cells that absorb photons from the sun and generate a flow of electrons, creating an electrical current. This electrical current can then be used to power homes, buildings, and other devices.
Calories don't "produce" energy; calories are a UNIT OF ENERGY.
Energy is obtained by proteins/carbohydrates in your body.
Most of the electrical energy we use in modern society is obtained from generators - these convert movement to electrical energy. These, in turn, may get the energy either from 1. Heat (burning coal, or nuclear reactors); in this case, the heat causes water to evaporate, and the pressure pushes the machinery, or 2. Potential energy, stored in water.
Energy (i.e calories). This stored fat can be converted easily into energy that your body can use - useful if there is no food available for a long time.
Energy (i.e calories). This stored fat can be converted easily into energy that your body can use - useful if there is no food available for a long time.
"Calorie" is not a chemical name but instead is a unit of the energy value that be obtained from food. Since any food sufficient to sustain life can provide calories for energy to the organism that consumes the food, almost any element (except the noble gases) can be a source of calories, but a calorie is a unit of the abstract concept energy rather than a material substance and therefore can not be "found" in food in the usual meaning of that phrase.
Electrical energy is the energy in electricity - mainly in electrical currents.
Electrical energy can be formed by solar, wind or hydro energy. This energy is transformed into electrical energy.