Electric Circuits and their Applications - Electric Essay Example

A flow of electric charge along a wire is what we called electrical current or electricity - Electric Circuits and their Applications introduction. The more charges that are passing along the wire will result to a larger current. For the charges to flow along the wire a force is required to push them and this force is called the voltage or potential difference. Charges will flow from regions of high potential to regions of low potential where the potential difference is the difference in potential of the two regions. Two regions have to be connected with a conductor to obtain charges to flow from a region of high potential to a region of low.

Electrical Circuits is a complete path, or circuit, is required before voltage can cause a current flow during resistances to perform work. There are a number of types of circuits, but all involve the same basic components. A power source (battery or alternator) produces voltage, or electrical potential. Conductors (wires, printed circuit boards) give a path for current flow. Working devices, or loads (lamps, motors), modify the electrical energy into another form of energy to perform work. Control devices (switches, relays) turn the current flow on and off.

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And, protection devices (fuses, circuit breakers) interrupt the current path if excessive current flows. Too much current is called an overload, which might damage conductors and working devices. Other materials that are occasionally used as conductors are silver, gold, and aluminum. Copper is still the most well-liked material used for wires for the reason that it is a extremely good conductor of electrical current and it is reasonably economical when compared to gold and silver. Aluminum and most other metals do not perform electricity quite as good as copper.

Circuits work because of moving electrons (negatively charged part of atoms). In a cell (battery) the electrons are repelled away from the negative terminal, throughout the conducting path and the appliance and back to the cell. After going throughout the path the electrons are attracted to the positive terminal of the power source and are prepared to go again. The electrons require an entire path or circuit to flow through so the electrons can go from the negative to the positive terminals of the power source. This flow of electrons is known as an electric current.

If there is a break in the circuit, the electrons can’t get throughout to the appliance and there will be no electrical charge. Furthermore, there are two types of electricity or electrical current that you will have come across. The first type is called the direct current (dc) which comes from batteries and the second type is called the alternating current (ac) which comes out of plugs in the wall and is produced in power station. The type of current that comes out of walls (ac) differs deeply from that which comes out of batteries (dc).

Moreover, a direct current (DC) electrical circuit consists of a source of DC electricity with a conducting wire going from one of the source terminals to a set of electrical procedure and then back to the other terminal, in a whole circuit. A DC circuit is essential for DC electricity to exist. DC circuits might be in series, parallel or a combination. Understanding DC circuits is significant for learning about the more complex AC circuits, like those use in the home. Moreover, a series circuit is the simplest circuit.

The conductors organize and protection devices, loads, and power source are connected with simply one path to ground for current flow. The resistance of each device can be unlike. The similar amount of current will flow through each. The voltage across each will be dissimilar. If the path is broken, no current flows and no part of the circuit work. Christmas tree lights are a good example of a series circuit. When one light goes out the entire string stops working also. Regardless of being considered simple, they are helpful and quite ordinary.

They exist as flashlights, doorbells, and several kitchen appliances. From a Physics point of view they show several of the rules that manage the behavior of electricity in circuits. In addition, parallel circuits have more than one path for current flow. The similar voltage is applied across each branch. If the load resistance in each branch is the same, the current in each branch will be the same. If the load resistance in each branch is dissimilar, the current in each branch will be different. If one branch is broken, current will keep on flowing to the other branches.

Furthermore, a parallel circuit has more than one resistor and gets its name from having multiple (parallel) paths to move along. Charges can move throughout every of numerous paths. If one of the items in the circuit is broken then no charge will move through that path, except that other paths will continue to have charges flow through them. Parallel circuits are found in most household electrical wiring. This is made in order that lights don’t stop working just because you turned your TV off.

References:

Electrical Circuits, Retrieved on August 13, 2006 at http://www. autoshop101. com/trainmodules/elec_circuits/circ101. tml Kurtus Ron, Direct Current (DC) Electrical Circuits Retrieved on August 14, 2006 at http://www. schoolforchampions. com/science/dccircuits. htm Janice Simpson, Electricity: Simple Circuits cited at http://can-do. com/uci/lessons99/electricity. html Parallel Circuit, Retrieved on August 13, 2006 at http://www. regentsprep. org/Regents/physics/phys03/bparcir/default. htm Simple Circuit, retrieved on August 11, 2006 at http://regentsprep. org/Regents/physics/phys03/bsimplcir/ SERIES AND PARALLEL CIRCUITS, Retrieved on August 14, 2006 at http://www. ibiblio. org/obp/electricCircuits/DC/DC_5. html

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