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

Explain dielectric break down, Dielectric break down Dielectric Breakd...

Dielectric break down Dielectric Breakdown : Dielectric Breakdown of a dielectric material is because of the excitation of electrons into the conduction band across the energy

Determine the change in temperature of water, What is the change in tempera...

What is the change in temperature of water after falling over a 50.0-m-tall waterfall? Suppose that the water is at rest just before falling off and just after it reaches the b

What is half wave plate, What is half wave plate? Explain its action o...

What is half wave plate? Explain its action on polarized light incident on it with its electric vector E making an angle with the optic axis of the half wave plate.

Acceleration, Jason and his sister, Tara, are riding bicycles. Jason tries ...

Jason and his sister, Tara, are riding bicycles. Jason tries to catch up to Tara, who has a10.0-s head start .

Currents, explain and give examples of the two types of current

explain and give examples of the two types of current

Hall effect, Hall effect: While charged particles pass through a tube ...

Hall effect: While charged particles pass through a tube that has both an electric field & a magnetic field (perpendicular to the electric field) exist in it, only certain vel

Project , formula used in thermoelectric thermometer experiment

formula used in thermoelectric thermometer experiment

Unit of impulse, UNIT: SI unit of impulse is NS (Newton x Second) or ...

UNIT: SI unit of impulse is NS (Newton x Second) or kgms -1

Newton's law of gravitation, Newton's Law of Gravitation In 1687, Newto...

Newton's Law of Gravitation In 1687, Newton did not "discover" gravity but he did figure out that gravity is universal. It makes a ball fall when you drop it on earth. It also

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