Difference Between Electrical Energy and Electrical Power

Hello guys, I hope you all are doing great. In today’s tutorial, we will have a look at the Difference Between Electrical Energy and Electrical Power. In the electrical power system, there are 2 most common terms used first one is electrical energy and the second one is electrical power. The basic difference among them is that electrical energy is defined as the amount of work done due to current flows through the circuitry.

Electrical power explains the rate at which work is done in the circuitry. In today’s post, we will have a detailed look at both electrical energy and electrical power and find their differences. So let’s get started with the Difference Between Electrical Energy and Electrical Power.

Difference Between Electrical Energy and Electrical Power

Electrical Energy

•  The net work done in circuitry is called electrical energy.
•  It is denoted with the E.

• It caused due to the motion of electrons.
• It is converted form oef electrical poteteial enrgy.
• It is a combination of current and electric potential.
• Any type of electrical energy is potential energy.
• It is measured in kilowatt-hours.
• 1 kWh is equal to 3.6 Mega jouls.
• The energy meter is used to measure this term
• the quantity of electric energy produced depends on the charge motion
• Lightning is an example of electrical energy  car battery produces electric energy

• Its mathematical expression is E = VI.t or Pxt.
• Its system international unit is the joule.

Electrical power

• The work done per unit of time to flow of current in circuitry is called electrical power.
• The rate of energy transfer in unit time is called electric power.

• P=VQ/t
• It is generated through electric generators, like an induction generator,, a synchronous generator.
• It can also be obtained from the battery.
• It is used at home markets industries to run loads.
• It can be transmitted to a longer distance through transmission lines.
• The main types of power are AC power DC power apparent reactive power
• It is denoted with the P.
• Its mathematical expression is P=VxI.
• Its system international unit is a watt.

Electric Energy vs Electric Power

Electrical Energy

• Electrical energy is defined as the capacity to perform electric work.
• Denoted with W or E.
• its formula is (W)= (Work*Time) or (Energy*Time)
• The SI unit is Watt.Sec (Ws) or Joule (J). With that measured in ergs and calories.
• It is converted into other types of energy such as (heat, light, etc).
• This energy is not generated or consumed.

Electrical Power

• It is the rate of work done per unit of time or the rate of energy transfer per unit of time.
• It is denoted as P
• The formula is Power, (P)= (Work/Time) or (Energy/Time)
• Its SI unit is Watt (W) or Joule/Sec (J/s).
• Electrical power is not stored in other storable devices.

What are Passive loads?

• Charges move from the high level to the low level then the current passes from the positive end to the negative end.
• The P.E. due to charges among the points of the device transformed to kinetic energy. Such devices called passive loads

What is Active Loads

• If charges are get motion through external force applied in a direction from less potential level to high then charges move and energy is transformed in the electrical energy from chemical or mechanical energy. The component used in this aspect is called active loads

Electric Energy Formula

The formula for measuring electrical energy is

 E = P * t 

Here

• E = Electric Energy 
• P = Electric Power 
• t = Time 

SI Units of Electric Energy

The standard unit of electrical energy is Joule J. Practically Kilowatt hours are used for measuring larger features of electric energy. 

SI Units of Electric Power

The basic unit of electrical power is Watt and larger quantities of power is measured in Kilowatts and megawatts (MW) in practical applications. 

That is a detailed post about the difference between electrical power and electrical energy. Now, you should also check out how to use energy efficiently. If you have any queries ask in the comments. Thanks for reading.