Electrical energy, Physics

Assignment Help:

Electrical energy:

Electrical energy is the ability of an electrical system to do work.

Energy is expended when work is done and the amount of energy used is equal to the work done.  The units of energy and work are the same, that is joules and the same equation is used for both.

          Energy  =  Work  =  VIt joules

The energy a body contains may be determined by calculating the electrical work done on the body to give it that energy.  Conversely, the work that a body could do if it used up all its energy may be determined by calculating how much energy it contains.

This assumes that no energy is lost in the conversion.  In practice energy is often 'lost' in the form of heat.

However no energy is actually destroyed, it is simply converted into some other form.  This is stated in the Law of Conservation of Energy  -  energy can neither be created nor destroyed but merely changed into other forms.

 

 


Related Discussions:- Electrical energy

Determine atomic number and weight atomic number, Compared with an atom of ...

Compared with an atom of atomic weight 12 and atomic number 6, the atom of atomic weight 13 and atomic number 6: (1) Contains more neutrons         (2) Contains more electro

Why isn''t copper used as a heating element?, It makes sense that copper sh...

It makes sense that copper should be used because it could heat up faster, making the event more efficient.

What is dual character of light, Q. What is dual character of light? L...

Q. What is dual character of light? Light behaves as particles of energy in the higher energy region as well as as waves in the lower energy region.

Calculate the refractive index of liquid, Focal length of convex lens is 0....

Focal length of convex lens is 0.1 m. A liquid lens is formed between a plane surface and one face of this lens of radius of curvature 0.12m. The converging combination formed is f

Determine the half-value layer of photons in air, Determine the HVL of phot...

Determine the HVL of photons in air, water, muscle, bone, and Pb for energies of 5 keV, 100 keV, 1 Mev and 100 MeV and then fill in the table below. Note that you must find the HVL

In represent vectors in a diagram on a piece of paper, In represent vectors...

In represent vectors in a diagram on a piece of paper. Answer: The "x" is supposed to symbolize your view of the tail feathers of an arrow that is going away from you. The

Why in inelastic collisions angle of momentum is conserved?, Mass of the sy...

Mass of the system is same. since, p=mv momentum remains same

State lenzs law, Q State Lenz's law. Lenz's law declares that the indu...

Q State Lenz's law. Lenz's law declares that the induced current produced in a circuit always flows in such a direction that it opposes the change or cause that produces it.

Determine phase of a delta-connected load, Each phase of a delta-connected ...

Each phase of a delta-connected load comprises a resistance of 30Ω and an 80µF capacitor in series. The load is connected to a 400V, 50Hz, 3-phase supply. Calculate (

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd