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

Short circiut ., You''ve recently wired up an experiment in the lab. Part o...

You''ve recently wired up an experiment in the lab. Part of the experiment involves having two long wires extended 2 meters below the ground. One day, the experiment stops working.

Discovery of neutron, Write down a short note on the discovery of neutron. ...

Write down a short note on the discovery of neutron. Show the uses of radioisotopes.

Gaia hypothesis, Gaia hypothesis (J. Lovelock, 1969): The idea that as...

Gaia hypothesis (J. Lovelock, 1969): The idea that as a whole Earth should be regarded as a living organism & that biological procedure stabilize the environment.

Characteristics of resistance, Characteristics of resistance:- Similar ...

Characteristics of resistance:- Similar amount of current passed by each resistance i.e. I = I1 = I2 = I3 = I4 ........ The sum of potential difference across individual res

Heat equation + matlab, I need to solve and write a MATLAB code the heat eq...

I need to solve and write a MATLAB code the heat equation by two methods ( Crank-Nicolson method and asymptotic method )

Does sunlight reflected off a mirror raise, Q. Does sunlight reflected off ...

Q. Does sunlight reflected off a mirror raise the temperature of the sun-rays? Answer:- A standard planar mirror will not raise the energy contained in the rays that refle

Why are polarized sunglasses are effective, Question Why are polarize...

Question Why are polarized sunglasses are effective? Answer: If it weren't for the fact that surfaces that produce glare have a tendency to absorb vertically polariz

Explain the term- zener breakdown, Explain the term- Zener Breakdown ...

Explain the term- Zener Breakdown Under a very high reverse voltage, depletion region expands and potential barrier increases resulting in a very high electric field (3X10 7

Explain retina, Retina It is inner most and sensitive layer. It receive...

Retina It is inner most and sensitive layer. It receives images of near and far objects.

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