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

Measuring ield strength of permanent magnets, I want to measure H, not B Th...

I want to measure H, not B The magnets in question are permanent magnets (large Neo or SmCo magnets), not coils ============================== Steel _______

State about the term- voltage gain, Determine voltage gain for the circuit...

Determine voltage gain for the circuit shown in figure below, with R F = 100K ? and R 1 =10 K?   Ans. Determination of voltage gain: The provided operational

Explain electrical bell, Electrical Bell: 1.An electromagnet, which is ...

Electrical Bell: 1.An electromagnet, which is made by winding insulated copper wire on a soft iron core. 2.An armature which is soft iron strip with spring. 3.A soft iron

How a cph products, How a CPH products? Answer; no time has passing of ...

How a CPH products? Answer; no time has passing of a CPH. Thus, CPH exists and never decay.

Force constants, what is the force constants of Gd2MoO6?

what is the force constants of Gd2MoO6?

Show the characteristic of the material, Wires A as well as wire B are both...

Wires A as well as wire B are both made out of copper. Both of wires have the same length. The diameter of wire B is doubles that of wire A. Answer: Resistivity is a charac

What are multistranded fibers, What are multistranded fibers? Multistra...

What are multistranded fibers? Multistranded optics is narrow walled tubes of transparent material that housing a number of smaller solid core fibers. These inner fibers are, u

Find the coefficient of self induction, Q. An emf of 5 V is persuading when...

Q. An emf of 5 V is persuading when the current in the coil changes at the rate of 100 As-1. Find the coefficient of self induction. Solution: Induced emf   e = - L dI/dt

What are the steps to the scientific notation, What are the steps to the sc...

What are the steps to the scientific notation? To write in scientific notation, you should first move the decimal point of the number to where the number is among 1 and 9. For

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

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