Difference between revisions of "Magnetic Field"
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| − | |[[File:MagneticFieldLines.png|center| | + | |[[File:MagneticFieldLines.png|center|300px]] |
| − | |[[File:MagneticFieldLinesEarth.png|center| | + | |[[File:MagneticFieldLinesEarth.png|center|300px]] |
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| style="height:20px; width:200px; text-align:center;" |The '''magnetic field''' of a [[Bat Magnet|bar magnet]]. | | style="height:20px; width:200px; text-align:center;" |The '''magnetic field''' of a [[Bat Magnet|bar magnet]]. | ||
| style="height:20px; width:200px; text-align:center;" |The '''magnetic field''' of [[Earth]]. | | style="height:20px; width:200px; text-align:center;" |The '''magnetic field''' of [[Earth]]. | ||
| − | | style="height:20px; width:200px; text-align:center;" |The '''magnetic field''' of an [[ | + | |} |
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| + | {| class="wikitable" | ||
| + | |[[File:MagneticFieldLinesWire.png|center|300px]] | ||
| + | |[[File:MagneticFieldLinesElectromagnet.png|center|300px]] | ||
| + | |- | ||
| + | | style="height:20px; width:200px; text-align:center;" |The '''magnetic field''' of a [[Electrical Current|current]] carrying [[wire]]. | ||
| + | | style="height:20px; width:200px; text-align:center;" |The '''magnetic field''' of an [[electromagnet]]. | ||
|} | |} | ||
Revision as of 13:07, 4 March 2019
Contents
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.
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| 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
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| The magnetic field of a bar magnet. | The magnetic field of Earth. | The magnetic field of an Electromagnet. |
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| 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.
|
|
| 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.
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| 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
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| The magnetic field of a bar magnet. | The magnetic field of Earth. |
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| The magnetic field of a current carrying wire. | The magnetic field of an electromagnet. |