The operation of an electrical generator relies on electromagnetic induction.

More Questions from Magnetism and Electromagnetism

• 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.
• Ferromagnetic materials have pre-existing magnetic fields.

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