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GCSE Physics notes: Magnetic energy stores

TYPES OF ENERGY - examples explained

(j) Magnetic energy stores

Doc Brown's GCSE 9-1 Physics Revision Notes

Suitable for GCSE/IGCSE Physics/Science courses or their equivalent

 

Magnetic or electromagnetic energy transfer

With magnetic energy you are dealing with the repulsion of like poles and the attraction of unlike poles:

(N <=> N and S <=> S) and the attraction of unlike poles (N =><= S).

  Magnetic energy stores in action.

Work is being done as the magnetic poles repel or attract.

Any attraction or repulsion movement of magnetic poles involves a force acting through a distance, so work is done and energy must be transferred.

Work is done when a magnet picks up an object like a piece of iron.

The interaction of magnetic fields with the flow of an electric current or production of magnetic fields by means of an electric current have many applications, and all involve energy transfers-conversions. See ...

Magnetism - magnetic materials - temporary (induced) and permanent magnets - uses gcse physics revision

Electromagnetism, solenoid coils, uses of electromagnets  gcse physics revision notes

Motor effect of an electric current, electric motor, loudspeaker, Fleming's left-hand rule, F = BIL gcse physics

Generator effect, applications e.g. generators generating electricity and microphone gcse physics revision


Energy resources, energy transfers, work done and electrical power supply revision notes index

Types of energy & stores - examples compared/explained, calculations of mechanical work done and power

Chemical energy stores  * Elastic potential energy stores, calculations  * Electrical & electrostatic energy stores

Gravitational potential energy and calculations  *  Kinetic energy stores and calculations  *  Nuclear energy store

Thermal energy stores  *  Light energy  * Sound energy  * Magnetic energy stores

Conservation of energy, energy transfers-conversions, efficiency - calculations and Sankey diagrams gcse physics

See also More on methods of reducing heat transfer eg in a house, insulating properties of materials

Energy resources: uses, general survey & trends, comparing renewables, non-renewables, generating electricity

Renewable energy (1) Wind power and solar power, advantages and disadvantages gcse physics revision notes

Renewable energy (2) Hydroelectric power and geothermal power, advantages and disadvantages gcse physics

Renewable energy (3) Wave power and tidal barrage power, advantages and disadvantages gcse physics

See also Renewable energy - biomass - biofuels & alternative fuels, hydrogen, biogas, biodiesel gcse chemistry notes

Greenhouse effect, global warming, climate change, carbon footprint from fossil fuel burning gcse chemistry

The absorption and emission of radiation by materials - temperature & surface factors including global warming

The Usefulness of Electricity gcse physics electricity revision notes

and The 'National Grid' power supply, mention of small scale supplies, transformers gcse physics notes


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