Question

व्हाट डू यू मीन बाय इलेक्ट्रोमैग्नेट​

Answer 1

Answer:

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Explanation:

• A device consisting of a coil of insulated wire wrapped around an iron core that becomes magnetized when an electric current flows through the wire. Electromagnets are used to convert electrical control signals into mechanical movements. See Note at magnetism.
• We already know that an electric current has the ability to produce a magnetic field in a plane perpendicular to the direction of current flow. The electromagnet uses this principle. An electromagnet can be defined as a magnet which functions on electricity. Unlike a permanent magnet, the strength of an electromagnet can be changed by changing the amount of electric current that flows through it. If the current flow is cut, the property of magnetism ceases to exist.
• But this is also an advantage of the electromagnet over a permanent magnet because controlling the electric current also controls the magnetic field, in this case, i.e., the strength of electric field controls the strength of magnetic field also. In fact, the poles of an electromagnet can even be reversed by reversing the flow of electricity.
• What is Electromagnet?
• Electromagnets are made out of a coil of wire (wire curled in series). This is more effective in producing a magnetic field than just a wire running straight. This effect can be strengthened by winding a wire tightly around a powerful core, made of magnetic material, such as iron. The picture above shows a coil wound around an iron nail. On its own, the iron nail is not magnetic.
• Properties of Magnet
• A few properties of the magnet are as follows:
• Attractive Property – Ferromagnetic materials like iron, nickel and cobalt are attracted by magnets
• Repulsive Property – Like poles repel each other while unlike poles attract each other
• Directive Property – A freely suspended magnet always points in the north-south direction

Answer 2

a soft metal core made into a magnet by the passage of electric current through a coil surrounding it.