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Magnetism and Electromagnetism
When the south poles of two bar magnets are brought close together, there will be a force of attraction.
True
Correct Answer:
False
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Magnetism and Electromagnetism
The operation of an electrical generator relies on electromagnetic induction.
Magnetic flux flows from the north pole to the south pole within the magnet.
A voltage is induced across a conductor if it remains absolutely stationary within a magnetic field.
The induced emf of a conductor cutting flux lines is directly proportional to the rate of cutting.
The magnetic field, current through the Hall element, and Hall voltage are all at right angles to each other.
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.
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