Resistance is what causes the electric energy?
Top best answers to the question «Resistance is what causes the electric energy»
- There is a resistance to the flow of an electric current through most conductors. An electric current flows when electrons move through a conductor, such as a metal wire. The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance.
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Resistance is similar to friction for electrical energy; resistance causes the electrical energy to be lost as heat (thermal energy), just like friction causes mechanical energy to be lost as heat. Resistance is a measure of how much voltage an electrical element needs in order to increase the electric current .
There are many causes of resistance, corrosion, temperature, too small a wire etc. However, a basic answer is that as an electric current flows through a conductive material, it meets atoms of the material through which it is flowing. Some materials allow good flow, Copper, Gold, Silver for example.
The moving electrons can collide with the ions in the metal. This makes it more difficult for the current to flow, and causes resistance. The resistance of a long wire is greater than the...
What causes resistance? (ESAFH) On a microscopic level, electrons moving through the conductor collide (or interact) with the particles of which the conductor (metal) is made. When they collide, they transfer kinetic energy. The electrons therefore lose kinetic energy and slow down. This leads to resistance.
The movement of electrons is hindered by vibration of the atoms in the metal lattice, which causes part of the electrical energy of the electric current to be lost - this is resistance. Since lattice vibrations increase as the temperature rises, the resistance of metals also increases as the temperature rises. Conductors and Insulators
In the classical model of Drude, the resistance comes from the collision of the electron with the impurities or with the phonons (waves in the solid), depending on your material. The phenomenon of heating up is that you dissipate the energy given from the current by collision with phonon/impurities etc...
The increase in water causes the electrical resistance between the electrodes to decrease. The resistance of the sensor is related to the water content, and a value of water potential can be calculated using its predetermined relationship with water content.
The electrical energy lost when current passes through a resistance shows up as heat energy. If the resistor has a value of R ohm and a current of I ampere passes through it, the power generated ...
The energy efficiency of electric resistance heating, at 99.5%, is very high and implies the maximum possible thermodynamic efficiency for electric heating is 100%. But this implication is incorrect, since an energy efficiency of 100% does not correspond to the most efficient heating device possible, ...
Resistance can also apply to an entire circuit. What causes resistance? On a microscopic level, electrons moving through the conductor collide (or interact) with the particles of which the conductor (metal) is made. When they collide, they transfer kinetic energy. The electrons therefore lose kinetic energy and slow down. This leads to resistance.