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21: Magnetism

Last updated

Nov 5, 2020
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- 20.5: RC Circuits
- 21.1: Magnetism and Magnetic Fields

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Topic hierarchy

21.1: Magnetism and Magnetic Fields
An electric current will produce a magnetic field, which can be visualized as a series of circular field lines around a wire segment.
21.2: Magnets
There are two type of magnets—ferromagnets that can sustain a permanent magnetic field, and electromagnets produced by the flow of current.
21.3: Magnetic Force on a Moving Electric Charge
The magnetic force on a charged particle q moving in a magnetic field B with a velocity v (at angle θ to B) is F = qvBsin ( θ ) .
21.4: Motion of a Charged Particle in a Magnetic Field
Electric and magnetic forces both affect the trajectory of charged particles, but in qualitatively different ways.
21.5: Magnetic Fields, Magnetic Forces, and Conductors
When current runs through a wire exposed to a magnetic field a potential is produced across the conductor that is transverse to the current.
21.6: Applications of Magnetism
Mass spectrometers use electric or magnetic fields to identify different materials.

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