Essays Tagged: "Electromagnetic induction"

Lenz's Law and Magnetic Flux

t, the average induced emf during this time isThis fundamental result is known as Faraday's law of induction.The minus sign is placed there to remind us in which direction the induced emf acts. Exper ... counter emf controls the speed of a motor.For a given coil, the ratio of the electromotive force of induction to the rate of change in the coil is called the self-inductance of the coil. An alternativ ...

(3 pages) 80 0 4.6 Jan/1997

Subjects: Science Essays > Physics

The Application of Science to Engineering. Speaks of the law of electromagnetic induction, the telephone, the development of cement, and the development of steel

ication of pure science.One of the most important scientific discoveries of all time was the law of electromagnetic induction discovered by an englishman, Micheal Faraday, in 1831. This discovery was ...

(4 pages) 69 0 4.0 Apr/1996

Subjects: Science Essays > Engineering

The Electric Generator.

oduce electricity in a coil of copper wire by moving the coil near a magnet. This process is called electromagnetic induction.A simple generator (see Figure 1 below) consists of a single loop of wire ... that becomes a strong magnet when an electric current is passed through wire coiled around it.§Electromagnetic Induction - the production of an electromotive force in a circuit by variation of th ...

(4 pages) 81 0 3.0 Jun/2003

Subjects: Science Essays > Physics

How an electric generator works and what parts it consists of.

ctric current within the loop.The way an electric generator functions is based on the principal of "electromagnetic induction". Electro magnetic induction is when you move a wire through a magnetic fi ...

(2 pages) 62 0 3.7 Nov/2003

Subjects: Science Essays

Motors and Generators.

tween field of coil and field of permanent magnetic results in vibrations of cone - reproduces soundElectromagnetic induction*Relative Motion between a conductor and magnetic field is used to generate ... oltage and current - DC cannotTransformers*Operate only on AC*Operate according to the principle of electromagnetic inductionPurpose and Principle*Device used to change voltage and current within circ ...

(8 pages) 47 2 3.0 Mar/2004

Subjects: Science Essays > Physics

The History Of The Atomic Theory and Michael Farrady

to be invented. It was not until the 29th of August 1831 when he discovered electro-magnetic induction. This was the principle behind the electric transformer and generator. He created a circui ...

(2 pages) 38 0 4.2 Oct/2004

Subjects: Science Essays > Physics

Electromagnetic Induction

The phenomenon called electromagnetic induction was first noticed and investigated by Michael Faraday, in 1831. Electromag ... ts to a changing magnetic flux.The necessity of motion to produce a current is due to the fact that electromagnetic induction involves a time-varying magnetic field. The same effects can be produced b ... field crosses the plane of the loop. This conclusion lead to the development of other law involving electromagnetic flux.Sometime after Faraday's experiments and conclusions, Scottish physicist James ...

(9 pages) 45 0 4.3 Nov/2004

Subjects: Science Essays > Physics

One application of magnetic fields in household appliances.

torque is developed when this force is applied at a given distance from the axis of the rotor.Most electromagnetic motors are rotary, but linear types also exist. In a rotary motor, the rotating part ... tains electromagnets that are wound on a frame. Though this frame is often called the armature. The electromagnetic field works as shown in the diagrams below.DC motors.A simple DC electric motor. Whe ...

(14 pages) 48 0 0.0 Sep/2005

Subjects: Science Essays > Physics

HSC Physics – Motors and Generators – Summary Notes

between direction of magnetic field, and normal to area.•0 = strongest flux, 90 = no flux•Electromagnetic induction and change in flux.oInduction = changing magnetic flux creates a current i ... Needs multiple stations, close to city.oDC good because: less interference with electronics + less electromagnetic radiation. Underground cables better for DC. Electrochemical need DC.• Protecti ...

(4 pages) 30 0 3.0 Mar/2007

Subjects: Science Essays > Physics


ted started experimenting with electromagnetism. In 1831, Michael Faraday starts to experiment with electromagnetic induction. By 1833, Duchenne de Boulogne had begun experiments involving the simulat ...

(9 pages) 44 0 4.0 Nov/2001

Subjects: Social Science Essays > Psychology