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Class practical: the deflection of a compass needle increases with the current carried by a wire.
Class practical: a plotting compass and iron filings show that the shape of this magnetic field resembles that of a permanent...
Class practical: iron filings show that a long, closely wound current-carrying coil behaves just like a bar magnet.
Class practical: iron filings reveal the pattern of magnetism around a current-carrying wire, and factors that affect it.
Class practical: using a plotting compass and iron filings to explore the field pattern.
The aim of this activity is to develop the idea of a magnetic field by engaging pupils in drawing some magnetic field patterns...
Magnetic fields are represented by diagrams which show patterns of magnetic field lines.
A simple way of mapping the rough shape of a magnetic field is to use iron filings. For example, the magnetic field pattern of...
Magnetism is a non-contact force. For example, a magnetic force can be acting on a paper clip when a magnet is nearby but not...
One magnet exerts a force on another. Magnetic field line patterns (see the SPT: Magnetism topic episode 01 for an...
Hans Christian Ã˜rsted (1777–1851) was a Danish physicist and chemist who is most widely known for observing that electric...
The field around a permanent magnet should be familiar to your students. In practice, where we want a controllable field, we...
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