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Magnetism and Electromagnetism
The magnetic field, current through the Hall element, and Hall voltage are all at right angles to each other.
True
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True
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Magnetism and Electromagnetism
A magnetic material such as iron can change the course of magnetic lines of force.
The unit of magnetic flux density is the weber.
The Hall voltage is the voltage created by a conductor moving through a magnetic field.
The ability of a material to maintain a magnetized state (without the presence of a magnetizing force) is called retentivity.
A magnetic field is produced around a current-carrying conductor.
Ferromagnetic materials have pre-existing magnetic fields.
The induced voltage across a stationary conductor in a stationary magnetic field ___.
After the magnetizing force has been removed, the ratio of the remaining magnetic flux to the saturated magnetic flux is called _____________.
The movable part in a relay is the _____.
A group of force lines going from the north pole to the south pole of a magnet is called the magnetic ___.
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