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

Calculate the mass of the car, A car is moving along a straight horizontal ...

A car is moving along a straight horizontal road at a speed of 20 meters per second.  The brakes are applied and a constant force of 5000 Newtons decelerates the car to a stop

Electrostatics, What is quantisation of electric charge?

What is quantisation of electric charge?

What is viscosity, The property of liquids (or gases) by virtue of which a ...

The property of liquids (or gases) by virtue of which a backward dragging force (viscous drag) acts tangentially on the layers of the liquid in motion and it tries to stop the moti

Obtain relativistic expression for the kinetic energy, Obtain Relativistic ...

Obtain Relativistic expression for the kinetic energy of the particle.

Transform kinetic energy into vertical potential energy, Transform kinetic ...

Transform kinetic energy into vertical potential energy A pole vaulter performs the extraordinary feat of converting his forward kinetic energy to vertical potential energy. Us

Explain the spinning problems, Explain the Spinning Problems The Law of...

Explain the Spinning Problems The Law of Conservation of Angular momentum states that if there is no net applied torque on a body then angular momentum is conserved. This is si

Draw a possible configuration of nodes and cells - 2d shape, Consider the 2...

Consider the 2D shape below. Draw a possible configuration of nodes and cells (at least 15) that could be used to solve for the temperature distribution. Provide equations that wou

Calculate drg process of equilibrium , In the following dissociation reacti...

In the following dissociation reaction, A 2 (g) is 42.7 % dissociated at equilibrium at 64.8 o C , and 1 bar pressure. A 2 (g)  ↔  2A Calculate D r G o for this proce

What do you mean by mobility, Q Define: mobility. Give its unit. The mo...

Q Define: mobility. Give its unit. The mobility is defined as the drift velocity obtains per unit electric field. The unit of a mobility m 2 V 1s 1.

What do you understand by diffraction of waves, 1. What do you understand b...

1. What do you understand by diffraction of waves? Explain why the diffraction of sound is more easily observable than the diffraction of light? 2. The wavelength of two spectra

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