Electrical power, Physics

Assignment Help:

Electrical power:

Electrical power (symbol P) is the rate at which work is done or the rate of conversion of energy by an electrical system.

2451_Electrical power.png

The SI unit of power is the watt which is a rate of work of 1 joule per second.

                   Therefore           P  =  V  *  I        

                   That is                watts  =  volts  *  amps

By substituting V  =  IR in the above formula, two other expressions for electrical power are obtained:

                                      P  =  VI  =  I2R  =  V2/R  watts

 


Related Discussions:- Electrical power

What is the sign of the charge of the cup, Regard as two Styrofoam cups. Ea...

Regard as two Styrofoam cups. Each one is on the end of its own neutral slender glass rod which serves as a handle. One of the cups has a fixed amount of positive charge consistent

Emf and size, is there relation between emf and size os cell?

is there relation between emf and size os cell?

Distillation column design, A mixture of methanol and water is to be separa...

A mixture of methanol and water is to be separated in a new separation unit and you are required to provide a report detailing the design and costing of a distillation column with

Shear force diagram, Shear force diagram (SFD) and bending moment diagram (...

Shear force diagram (SFD) and bending moment diagram (BMD) are a graph of shear force / bending moment plotted against the horizontal axis x, indicating the shear force / bending m

Evaluate concave lens focal length, A concave lens when given in air has a ...

A concave lens when given in air has a focal length of 0.4 m and has a refractive index of 3/2. Evaluate its focal length when immersed in water of refractive index 4/3?

Nuclear reactions, estimation of nuclear fusion on basis of liquid drop mod...

estimation of nuclear fusion on basis of liquid drop model

What is the kinetic energy of the block subsequent, A block of mass m on a ...

A block of mass m on a plane horizontal frictionless surface is pushed up against the end of a horizontal spring the other end of which is connected to a wall therefore that it com

Intensity, example of earth quake intensity

example of earth quake intensity

#title. entopy., what is entropy and how is it useful in our everyday life?...

what is entropy and how is it useful in our everyday life?

Determine the kinetic energy of simple harmonic oscillator, The total ener...

The total energy of a simple harmonic oscillator is 0.8 erg. What is its kinetic energy when it is midway between an extreme position and mean position?

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