What is an electromagnet ? Give any three uses of electromagnet . Name two factors on which the strength of an eletromagnet depends .
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Answer:
Electromagnet :
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated in the hole, denoting the center of the coil.
Three uses of electromagnet :
Electromagnets are widely used as components of other electrical devices, such as motors, generators, electromechanical solenoids, relays, loudspeakers, hard disks, MRI machines, scientific instruments, and magnetic separation equipment.
The strength of an electromagnet depends on:
The strength of the current passing through the coil, the greater the current, the greater the strength. ...
The number of turns in the coils, the greater the number of coils, the greater the strength. ...
Whether the core is made up of a soft or hard magnetic material.
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Answer and Explanation: An electromagnet is a device that is when a iron rod is wrapped up with wires, the current also flows. When this iron rod is given current,it will act as an electromagnet. They are used in washing machines, electric fan, bells and even in picking up metal objects from a garbage dump. The factors are number of coils and the current given out to the iron rod.
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