Essay on Power in Electric Circuits

Submitted By Ayham-Alnasser

Words: 455

Pages: 2

Open Document

http://www.taconichills.k12.ny.us/teacher%20data/antalk/How%20Circuits%20Work Power circuits transfer and control large amounts of electricity. Examples are power lines and residential and business wiring systems. The major components of power circuits are generators at one end and lighting systems, heating systems or household appliances at the other end. In between are power lines, transformers and circuit breakers. http://www.nwscc.edu/nsfdc/technology/DCTermspage.htm l An electric circuit is a path in which electrons from a voltage or current source flow.
Electric current flows in a closed path called an electric circuit. The point where those electrons enter an electrical circuit is called the "source" of electrons. The point where the electrons leave an electrical circuit is called the "return" or "earth ground". The exit point is called the "return" because electrons always end up at the source when they complete the path of an electrical circuit.
Anthony C. FischerCripps (2004).
The electronics companion
. CRC Press. p. 13.
(BOOK)
An electric current is a flow of electric charge
. In electric circuits this charge is often carried by moving electrons in a wire . It can also be carried by ions in an electrolyte , or by both ions and electrons such as in a plasma http://www.explainthatstuff.com/electricity.html
Static electricity often happens when you rub two things together. If you rub a ballon against your jumper 20 to 30 times, you’ll find that the balloon sticks to you.This happens because rubbing the balloon gives it an electric charge. The charge makes it stick to your jumper like a magnet, because your jumper contains an opposite electric charge. So your jumper and the balloon attract one another

Essay about Science -Enegy

elastic energy. 2. Explain how an electric current provides energy for electric appliances. Electric lights, refrigerators, TV and stereos need a steady source of electric energy comes from an electric current, which is the flow change through a conductor. In solids, the flowing charges are electrons. In liquids, the flowing charges are ions, which can be positively or negatively charge. When electric charges move in a wire, we say that an electric current flows in the wire. It's like the…

Words 780 - Pages 4

Scien: Electricity and Circuit Essay

ceAn ammeter measures electric current, in amps, by measuring how much charge is flowing in the circuit. A voltmeter measures, in volts, the difference in electrical energy between two points of a circuit. Have you ever heard a crackle when taking off your jumper? This is caused by tiny electric charges on your clothes. It's called static electricity. Your jumper and shirt get electrically charged as they rub together, and then negative electric charges jump from one to the other. This makes…

Words 1229 - Pages 5

Electricity Notes Essay

environment, the use of coal is constantly being reduced as people search out alternative fuels * Coal takes a long time to form Step-by-step explanation of the process at work to turn raw materials into the power and brings comfort to our lives. 1. Trains and trucks deliver coal to power plants. The plants store the coal in huge piles. 2. Before it can be burned, the coal must be crushed into small piece and sent on a conveyor belt to bins that hold a one- or two-day supply. 3. The…

Words 662 - Pages 3

kaveh babaei Essay

effect of blade length in a wind turbine on outcome electric power, a small experiment was done to indicate the most efficient blade length in a turbine. To achieve the results, 6 different blade lengths were cut out of cardboard. Then the blades were attached to a disc which joined the stellar wind motor. A stellar fan was place in front of the blades which was the wind source. The voltage and current were measured by voltmeter and ammeter. The power was calculated by multiplying voltage and current…

Words 3193 - Pages 13

Mechanical Work of Heat Lab Report Essay

is it created; also to understand what the relationship between mechanical energy, electrical power and joule heating coming from a resistor submerged in water. Furthermore comprehend how to use an electric circuit depending on the use of an ammeter or a voltmeter using a parallel and a series circuit respectively. By the termination of this experiment we will be comfortable working with basic circuits. Concepts Historically the mechanical conversion of heat has been a concept with a great importance…

Words 893 - Pages 4

Motor Design: Motor Theory: How Our Motor Works

On the other hand, the north end of one magnet will repel the north end of the other and similarly, south will repel south. In an electric motor, these attracting and repelling forces create a magnetic field which can be used to drive an electric motor. To understand how an electric motor works, the key is to understand how the electromagnet works. An electromagnet is the basis of an electric motor. You can understand how things work in the motor by observing the field of the electromagnet flips. The flip causes…

Words 2022 - Pages 9

Course Notes Essay example

• Charge Q (C); Current I (A); Voltage V (V) • Power P (W) • Reference directions • Basic concepts (1) Form of Energy ‘ • lnterco lJfl of electrical elements using conducting wires • Used i ‘erous electrical systems (often with other non electrIc& systems), to accomplish different tasks • Circuit A ayss understand circuit behaviour, interactv between elements, system response, etc. Electric& ircuits Laws eri rIations that govern fundamentals, uses, and convers’ n…

Words 994 - Pages 4

Nt1310 Unit 2 Circuit Lab

The purpose of the second circuits lab was to investigate voltage, current and resistance of a circuit in series, a circuit in parallel and a circuit that cannot be classified as either. Once again voltage (V) is the electric potential difference measured in volts. Resistance (R) is how much the electric force is reduced measured in Ohms. And current (i) is the flow of electrons measured in Amperes. In the circuit in series, the current is constant throughout since there is only one past for the…

Words 600 - Pages 3

Class Description Essay

EE 332 Devices and Circuits II (5) Examines the characteristics and models of bipolar and field-effect transistors, linear acircuit applications, including low and high frequency analysis of differential amplifiers, currents sources, gain stages and output stages, circuitry of op-amps, their configurations, stability and compensation. Digital Circuits and Systems Overview of digital computer systems. Digital logic, Boolean algebra, combinational and sequential circuits and logic design,…

Words 661 - Pages 3

Electric Motor Research Paper

Almost every mechanical movement that we see around us is accomplished by an electric motor. Electric machines are means of converting energy. Motors take electrical energy and produce mechanical energy. Electric motor is used to power hundreds of devices we use in everyday life. An example of small motor applications includes motors used in automobiles, robot, hand power tools and food blenders. Micro-machines are electric machines with parts the size of red blood cells and find many applications…

Words 927 - Pages 4