Electric Current College Essays Samples For Students

Introduction

Electromagnetism refers to the creation of a magnetic force from the movement of electrical charges. In order to find application in most electrical appliances, electromagnetism concerns the use of electric current to make electromagnets. This field of electricity is called Electrodynamics. It can also mean using magnetic field to induce an electric current. This field of electromagnetism is called Electromagnetic Induction. Almost all electrical appliances use one of the two types of electromagnetism mentioned above especially those with moving parts. This paper discusses the application of electromagnetism in a speaker.

Application of electromagnetism in a speaker

The speaker is basically an electronic transducer which converts electric energy ...

An automotive engine is a propulsion system responsible for moving automobiles from one place to another. An engine converts energy from a fuel or a battery to the mechanical energy used to spin the wheels, thus setting a vehicle in motion. There are different types of engines used in the automotive industry today. These include internal combustion engines and electricity driven vehicles. The internal combustion engines burn fuels such as petrol, diesel, natural gas or propane. Electric engines are fitted with electromagnetic motors that are powered by electric currents from storage batteries on the vehicle. The sole purpose of ...

Investigation of Solar cells

Introduction
Solar cells, also known as photovoltaic cells, rely on the photoelectric effect to convert the solar radiation into electric energy. Photoelectric effect refers to the tendency of materials to emit electrons when light is shown on them. The electrons dislodged from the surface of an object as a result of light being shown on the surface of such materials are referred to as photoelectrons. Not all materials exhibit the ability to emit electrons when placed along the path of light. Most with the ability to emit electrons are metals.
Silicon is a key ingredient of a solar cell. ...

Communication

Communication

Introduction

Radio communication is one of the earliest forms of communication. It involves the transmission of information through electromagnetic waves, traveling at the speed of light. Radio communication has two main components: radio transmitter and radio receiver. A radio transmitter is an electronic device that initiates the communication process by generating radio waves containing information targeting a specific audience. A receiver refers to an electronic gadget that obtains the signals and converts them into an easily understandable format. It consists of the antenna, amplifier, tuner and detector (Lowe, n.d.). The antenna intercepts electromagnetic waves in the air and converts them ...

Introduction

Solar power is a renewable source of energy that is effective in reducing the carbon footprint. Solar power is a perfect substitute for hydropower and the use of engines that run on petroleum products and steam (Benduhn, 18). This technology relies on the use of certain materials to capture and harness the sun’s energy into electric energy. Solar power generation employs environmental friendly means. The power generated can be converted into Alternating Current (AC) and used to run operations that would normally use hydropower and petroleum engines. As such, solar power generation and usage are energy-efficient and efficient in the ...

In modern world transportation is the heart of civilization. There are different modes of transportations – train, ship, aeroplane, vehicles run on road such as bus, cars etc. In all modes of transportation fossil fuel is generally used. But the carbon emission from fossil fuel-burning-combustion engine vehicles causes environment pollution or global warming which is also a big concern in today’s world. So, primary objective has become to reduce the use of fossil fuel-burning-combustion engine vehicles in transportation as far as possible. The core idea of future transportation is to decrease emissions. For last few decades researchers have been developing ...

Electricity and Magnetism in transport system.

The resultant energy from existing charged particles that are either static or in motion is called electricity and such energy can be used in homes, industries and in transport system. Whereas magnetism is a physical aspect that involves the electric charges, their motion and effect thus producing fields that repel and attract other objects (Kirkland, 2007). Electromagnetism plays an important role in our life and it is believed that it will change the future especially when it comes to transportation. Therefore electricity and magnetism can be considered to be inextricably linked in many cases; the essay will hence argue the ...

Incandescent light bulbs emit light by the heating of the filament inside the bulb. First developed by Humphrey Davy in 1802, the earliest incandescent bulbs were made from two charcoal strips with a high power battery used to pass current trough it. The flowing current lead to the production of an intense incandescent light that became the first component of the arc lamp. Future improvement was done by Warren De La Rue in 1820 utilizing the platinum coil inside an evacuated tube. This design was motivated by the high melting point of platinum that would give the lamp a better operation ...

A transformer is an electrical piece of equipment used in electrical circuits to alter the voltage of the electricity flowing in a circuit by either increasing the voltage (stepping up) or decreasing the voltage (stepping down) (Pansini, 1999). Alternatively, they may be described as static machines which transform power from one circuit to another while maintaining the electrical frequency constant. Transformers are, therefore, very important devices in the distribution of electricity. There are two main reasons why transformers are important in the process of electricity distribution: “Stepping up” and “stepping-down.”
First, once produced at the power station, the electric ...

Hydraulic Fracturing Process

Hydraulic fracturing is a process through which fluids under high pressure are injected to crack a rock so as to allow oil and gas to flow into the wellbore. Once the rock is fractured, propant such as sand is injected to prop open the fractures to avoid sealing. During the process, water is used as a carrier fluid to transport the sand into the fractured rock matrix (Cabot Oil & Gas Corporation 4). The raw materials used for this process include sand and water, which make up 99 percent of the fluid used by Cabot. The other one percent is composed of chemical ...

Transport is a key factor of economy well as useful tool used for development of a society rather nation for its intensive use. Good transportation can create market and various social opportunities. There are various modes of transportations like train, bus, car, ship, aeroplane, etc. But fossil fuel, used in all modes of transportation, has become big concern in today’s world due to carbon emission causing environment pollution or global warming. So, the core idea of future transportation has become to diminish carbon emission and for this reason electricity and magnetism have become popular for their potential use in transport ...

Meissner effect is one of the remarkable properties of superconductors. Most superconductors are metals and metal alloys. However, some non-metals also exhibit superconductive properties hence they are regarded as superconductors. A superconductor refers to a material that can transfer electric current with zero resistance. This implies that when electric current is passed through a superconductor at a temperature below the critical temperature value (Tc), no energy is lost in any form: sound, heat, or light. It is important to point out that superconductivity of a material can only be observed at temperature below the critical temperature (Tc). Critical temperature values vary from one ...

The theory of operant conditioning created by behaviorist B.F. Skinner explains that a behavior can be understood by looking at the external apparent causes of an action and the related consequences resulting from that action. Skinner's theory was inspired by the Law of Effect theory of Edward Thorndike, but he added one additional component to Thorndike's law of effect and that is Reinforcement (McLeod, 2007). Reinforcement is of four types - positive reinforcement, negative reinforcement, punishment and extinction. According to Skinner, behavior can be reinforced through rewards and punishment. Both positive and negative reinforcement strengthen a behavior and encourage it to ...

In order to understand the relationship between light, magnetism and electricity, it is necessary to understand electromagnetism force, since this is the basis upon which the relationship is embarked on. In this essence, it should be noted that it is impossible to have electricity, in the absence of magnetism. This is because electricity conduction is only achieved through magnetic transmission. Electricity, to start with, is the energy charge that is transmitted through the flow of electrons through a conducting agent from one point to the next. This is referred to as an electric current. One of the most essential things ...