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Electricity power is an important aspect of circuit theory. It is the foundation of circuit theory and must be understood before diving deeper into the idea. The rate at which work is completed is referred to as electric power. The pace at which electrical energy is transferred across an electric circuit is referred to as electric power.
It is the speed at which electrical energy is transferred. The symbol for power is ‘P,’ and the SI unit is Watt. This article will teach you about electric power, its formula, and the formulas for electrical energy and power consumption, as well as some numerical examples.
Electric power
Electric power is the rate at which electrical energy is transferred by an electric circuit per unit of time. Watt is the SI unit of power.
Electric generators are the most common source of electricity, but other sources such as electric batteries can also be used. The electric power sector often provides it to businesses and houses (as domestic mains electricity) via an electric power grid.
Transmission lines can carry electric power across vast distances and be used for high-efficiency applications including motion, light, and heat.
Definition
Electric power, like mechanical power, is the rate at which work is completed, measured in watts and symbolised by the letter P. Wattage is a slang phrase that means “electric power in watts.” An electric current I carrying a charge of Q coulombs per t seconds flowing through an electric potential (voltage) differential of V produces an electric power in watts.
P=Work done per unit time=Wt=WQQt=VI
Here, Q is the charge
t is time in second
I is current in amperes
V is electric potential.
Current, or the flow of electric charge, and voltage, or the potential of charge to provide energy, are the two characteristics of electric power. Any combination of current and voltage values can yield a given amount of power. Electronic charge moves in the same direction through the gadget receiving power if the current is direct.
Electrical Energy
Electrical energy is the energy produced by the movement of electrically charged particles. Electrical energy is a term that is used to describe energy that has been converted from electric potential energy.
This energy is provided through an electrical circuit that delivers a combination of electric current and electric potential (e.g., provided by an electric power utility). This electric potential energy is no longer electric potential energy once it has been transferred to another type of energy. Before it is transferred to the end-user, all electrical energy is potential energy. Electrical energy is always referred to as another type of energy once it has been converted from potential energy (heat, light, motion, etc.).
Work is done when a force moves an item, and energy is the ability to do work. Every day, we require and use energy, which comes in a variety of forms. The energy held in charged particles within an electric field is known as electrical energy. Electric fields are the spaces that surround a charged particle. Charged particles, in other words, generate electric fields that exert force on other charged particles inside the field. The electric field exerts a force on the charged particle, causing it to move and so perform work.
Electric energy, which is found in charged particles in an electric field, is one of several types of energy.
Since we know that the Work done will be:
W=VQ
We know I=QT
Therefore, Q=It
Substituting the value of Q, we get
W=VI.t
Hence, Energy is given as:
E=VI.t
Difference between Electrical Energy and electrical Power
The two major terminologies related with electrical and electronics systems are electrical energy and electrical power. Electrical energy is different from electrical power in that it indicates the amount of work that is required to induce electric current to flow across a circuit.
Electrical power, on the other hand, refers to the rate at which work (essentially the movement of charges) is completed in an electrical circuit. The rate is also stated in terms of unit time.
Conclusion
In this article we have studied electrical energy and electric power. Electric power is the rate at which electrical energy is transferred by an electric circuit per unit of time. The watt, or one joule per second, is the SI unit of power.
Electric generators are the most common source of electricity, but other sources such as electric batteries can also be used. Electrical energy is the energy produced by the movement of electrically charged particles. Electrical energy is a term that is used to describe energy that has been converted from electric potential energy.
