Magnetic compass is used for navigation and its magnetic needle is made of permanent magnet which is always aligned according to the earth's magnetic field.
While In an electromagnet, the magnetic field is generated with the help of electric current. Electromagnets are temporary magnets i.e. they lose their magnetic properties as soon as the flow of current is stopped.
Hence these types of magnets are best suitable for an electric bell as their magnetism appears as soon as the electric current passes through them and magnetism disappears as soon as the flow electric current is switched off.
•An electromagnet is better than permanent magnet because it can produce very strong magnetic field and its strength can be controlled by varying the number of turns in its coil or by changing the current flowing through the coil.
•The major difference between an electromagnet and a permanent magnet is that the former can have a magnetic field when electric current flows through it and disappears when the flow of the current stops.
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Magnetic compass is used for navigation and its magnetic needle is made of permanent magnet which is always aligned according to the earth's magnetic field.
While In an electromagnet, the magnetic field is generated with the help of electric current. Electromagnets are temporary magnets i.e. they lose their magnetic properties as soon as the flow of current is stopped.
Hence these types of magnets are best suitable for an electric bell as their magnetism appears as soon as the electric current passes through them and magnetism disappears as soon as the flow electric current is switched off.
•in an electric doorbell electromagnet is used.
•permanent magnet is used in magnetic compass.
•An electromagnet is better than permanent magnet because it can produce very strong magnetic field and its strength can be controlled by varying the number of turns in its coil or by changing the current flowing through the coil.
•The major difference between an electromagnet and a permanent magnet is that the former can have a magnetic field when electric current flows through it and disappears when the flow of the current stops.
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