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

Scanning, Scanning is process of dividing an image on the screen into a lar...

Scanning is process of dividing an image on the screen into a large number of very small squares formed by sets of horizontal and vertical straight lines.   Iconoscope i

What do you mean by a shunt, What do you mean by a shunt? Reduce expression...

What do you mean by a shunt? Reduce expressions for the current flowing through the shunt resistance and galvanometer. Describe the principle on which a transformer works. Defin

What will be the resistance, Q The resistance of a platinum wire at 0 o C i...

Q The resistance of a platinum wire at 0 o C is 4 Ω. What will be the resistance at 100 o C, if the temperature coefficient of resistance is 0.0038/ o C.  Resistance at 100 o

Classes of magnetic materials: ferromagnetism, When you think of magnetic m...

When you think of magnetic materials, you possibly think of nickel, iron or magnetite. Distinct to paramagnetic materials, the atomic moments in these materials show very strong in

Wave optics, what happened to fringes if a transparent glass is placed in f...

what happened to fringes if a transparent glass is placed in front of slits???

Unit and dimension, A satellite is orbiting around a planet. its velocity i...

A satellite is orbiting around a planet. its velocity is found to depend upon a.)Radius of orbit b.)mass of planet c.)universal gravitational constant(G) Using dimensional analysis

Couple, Ask question how many types of couple are there?#Minimum 100 words ...

Ask question how many types of couple are there?#Minimum 100 words accepted#

Wiedemann-franz law, Wiedemann-Franz law: The ratio of thermal conduct...

Wiedemann-Franz law: The ratio of thermal conductivity of a particular pure metal to its electrical conductivity is approximately constant for any given temperature. This law

Cross product, Cross Product The direction of the cross product of 2 v...

Cross Product The direction of the cross product of 2 vectors is elaborates. The magnitude shown is correct but not discussed.

What do you mean by dispersion of light, What do you mean by dispersion of ...

What do you mean by dispersion of light? Write down the expression for the deviation produced by a thin prism?

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