What is electrical work? And electric power units and calculation formulas explain - Database & Sql Blog Articles

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Popular explanation: The work done by the process of converting electrical energy into other forms of energy is electrical work.

Electrical energy is an energy that is converted from other forms of energy (such as mechanical energy, thermal energy, chemical energy, nuclear energy), and electrical energy can be converted into other forms of energy. For example, when the electric energy is embodied, the electric current is converted into electric energy and thermal energy through the electric light bulb. After the electric current passes through the electric motor, the electric motor can drive the electric machine or the fan to operate and work. This is the conversion of electric energy into mechanical energy. the process of. Charging a battery is a process in which electrical energy is converted into chemical energy.

The process of converting electrical energy into other forms of energy is accomplished by current work. How much work is done by current is a measure of energy conversion. We also introduced the introduction of electromotive force in the foregoing, the electric field force pushes the charge (generating current) to do work. And look at the voltage calculation formula to know that the electric field force to move the charge is W=qU, and then the current calculation formula I=q/t (the charge passing through the conductor cross section per unit time) can be obtained: q=It, with Enter W=qU to get:

W=UIt

The electric work formula can also be written like this:

W=Pt

That is, in the first formula circuit, the work W performed by the current is equal to the voltage U across the circuit, the product of the current I in the circuit and the pass time t. In the formula W=UIt, the voltage unit is volt (V), the current unit is ampere (A), the time unit is second (s), and the electrical work unit is joule (J). In the second formula W=Pt, it is the electric power (P) multiplied by the time (t), P = UI. So in fact, the UI in the first formula is replaced by the electric power P.