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Explain the difference between permanent and electromagnetic magnets?
In an electric magnet there is an ordinary metal used which when you run a current through it, induces a magnetic field, the permanent magnet (usually made of lodestone) contains particles which are already arranged in a manner that produces a magnetic field.
Do permanent magnets produce electric currents?
Permanent magnets do not produce electric currents on their own. However, when a permanent magnet moves near a closed loop of wire or coil, it can induce an electric current in the wire due to electromagnetic induction.
What types of magnets are harder to magnetize but retain magnetism much longer?
permanent magnets
Are paperclips permanent magnets?
No, paperclips are not permanent magnets. They can temporarily exhibit magnetic properties when in the presence of a magnetic field, but they do not retain magnetism like permanent magnets do.
How does a permanent magnet generator work to produce electricity?
A permanent magnet generator works by using the magnetic field of permanent magnets to induce an electric current in a coil of wire. As the magnets rotate, they create a changing magnetic field that causes electrons in the wire to move, generating electricity through electromagnetic induction.
What force of two similar ends of magnets produce?
Magnets always produce an electromagnetic force- between the similar ends of magnets it is electromagnetic repulsion.
What are the differences between electromagnets and permanent magnets, and how do electromagnets differ from permanent magnets?
Electromagnets and permanent magnets differ in how they are created and their magnetic properties. Electromagnets are temporary magnets created by passing an electric current through a coil of wire, while permanent magnets are naturally occurring magnets with a fixed magnetic field. Electromagnets can be turned on and off by controlling the electric current, while permanent magnets always have a magnetic field.
What is PMDC motors?
PMDC-Permanent Magnet DC motor is a DC machine where the Permanent Magnets form the stator of the machine instead of conventional Field winding. It works on the same principle of electromagnetic induction.
What is the difference between magnetic and electromagnetic fields?
Magnetic fields are created by permanent magnets or electric currents, while electromagnetic fields are created by electric currents. Electromagnetic fields are more complex and can change over time, while magnetic fields are static.
What type of magnets are harder to magnets but retains magnetism much longer?
permanent magnets
A permanent magnet can affect?
A permanent magnet can affect magnets and electromagnets.
Where can I find permanent magnets?
Permanent magnets can be found in stores that sell hardware or industrial supplies, as well as online retailers. Specialized magnet stores or suppliers may also carry a wide variety of permanent magnets for different uses.
