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Magnetic Field

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Key Stage 3

Meaning

A magnetic field is the region around a magnet that affects other magnets or magnetic materials.

About Magnetic Fields

A magnetic field can be shown by placing a magnet under paper and then sprinkling iron filings on the paper.
A magnetic field is strongest at the poles of the magnet.
When a magnetic field is drawn the lines are extend from the North Seeking Pole to the South Seeking Pole of the magnet. The arrows on the field lines point from North to South.
MagneticField.png
MagnetIronFilings.png
The magnetic field lines point from north to south. Iron filings are a magnetic material so they can be used to show the magnetic field.

Examples

MagneticFieldLines.png
MagneticFieldLinesEarth.png
MagneticFieldLinesElectromagnet.png
The magnetic field of a bar magnet. The magnetic field of Earth. The magnetic field of an Electromagnet.
SolarFlare1.gif
This animation shows a solar flare curving back to The Sun due to a strong magnetic field

Key Stage 4

Meaning

This animation shows a solar flare curving back to The Sun due to a strong magnetic field.

A magnetic field is the region around a magnet in which magnets or magnetic materials experience a force.

About Magnetic Fields

A magnetic field can be shown by placing a magnet under paper and then sprinkling iron filings on the paper.
MagneticField.png
MagnetIronFilings.png
The magnetic field lines point from north to south. Iron filings are a magnetic material so they can be used to show the magnetic field.
When a magnetic field is drawn the lines are extend from the North Seeking Pole to the South Seeking Pole of the magnet. The direction of the magnetic field is shown by the arrows on the field lines point from North to South.
The strength of magnetic field is shown by how close together the magnetic field lines are.
A magnetic field is strongest at the poles of the magnet.
MagneticFieldRegions.png
The region marked A is in a stronger magnetic field than region B as shown by the number of field lines enclosed in the area.

Examples

MagneticFieldLines.png
MagneticFieldLinesEarth.png
The magnetic field of a bar magnet. The magnetic field of Earth.
MagneticFieldLinesWire.png
MagneticFieldLinesElectromagnet.png
The magnetic field of a current carrying wire. The magnetic field of an electromagnet.

References

AQA

Magnetic fields, pages 214-229, GCSE Physics; Third Edition, Oxford University Press, AQA
Magnetic fields, pages 216, 217, GCSE Combined Science Trilogy; Physics, CGP, AQA
Magnetic fields, pages 222-3, GCSE Physics, Hodder, AQA
Magnetic fields, pages 276-7, GCSE Combined Science Trilogy 2, Hodder, AQA
Magnetic fields, pages 289, 290, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
Magnetic fields, pages 92-98, GCSE Physics; The Revision Guide, CGP, AQA
Magnetic fields; Around a current-carrying wire, pages 278, GCSE Combined Science Trilogy 2, Hodder, AQA
Magnetic fields; around a solenoid, page 225, GCSE Physics, Hodder, AQA
Magnetic fields; Around a solenoid, pages 279, GCSE Combined Science Trilogy 2, Hodder, AQA
Magnetic fields; combination of, page 228, GCSE Physics, Hodder, AQA
Magnetic fields; Combination of, pages 281, GCSE Combined Science Trilogy 2, Hodder, AQA
Magnetic fields; field lines, page 92, GCSE Physics; The Revision Guide, CGP, AQA
Magnetic fields; field strength, pages 92-94, GCSE Physics; The Revision Guide, CGP, AQA
Magnetic fields; Fleming`s left-hand rule, pages 281-2, GCSE Combined Science Trilogy 2, Hodder, AQA
Magnetic fields; Flemings left-hand rule, page 229, GCSE Physics, Hodder, AQA
Magnetic fields; flux density, page 94, GCSE Physics; The Revision Guide, CGP, AQA
Magnetic fields; induced potential difference, pages 232-3 GCSE, GCSE Physics, Hodder, AQA
Magnetic fields; motor effect, page 228, GCSE Physics, Hodder, AQA
Magnetic fields; near a straight wire, page 224, GCSE Physics, Hodder, AQA
Magnetic fields; of the Earth, page 217, GCSE Combined Science Trilogy; Physics, CGP, AQA
Magnetic fields; of the earth, page 290, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
Magnetic fields; of the Earth, page 92, GCSE Physics; The Revision Guide, CGP, AQA

Edexcel

Magnetic fields, page 133, 168-169, GCSE Physics, Pearson Edexcel
Magnetic fields, page 267, GCSE Physics, CGP, Edexcel
Magnetic fields, pages 195, 197, GCSE Combined Science; The Revision Guide, CGP, Edexcel
Magnetic fields, pages 375, 402-403, GCSE Combined Science, Pearson Edexcel
Magnetic fields, pages 85, 87, GCSE Physics; The Revision Guide, CGP, Edexcel
Magnetic fields; flux density, page 274, GCSE Physics, CGP, Edexcel
Magnetic fields; forces, pages 268, 269, 273-275, GCSE Physics, CGP, Edexcel
Magnetic fields; materials, page 267, GCSE Physics, CGP, Edexcel
Magnetic fields; of bar magnets, page 268, GCSE Physics, CGP, Edexcel
Magnetic fields; of current-carrying wires, page 270, GCSE Physics, CGP, Edexcel
Magnetic fields; of solenoids, pages 270, 271, GCSE Physics, CGP, Edexcel
Magnetic fields; uniform fields, page 268, GCSE Physics, CGP, Edexcel

OCR

Magnetic fields, pages 120-123, 126-128, Gateway GCSE Physics, Oxford, OCR
Magnetic fields, pages 183, 184, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR
Magnetic fields, pages 52-57, Gateway GCSE Physics; The Revision Guide, CGP, OCR