Admin What is an electro magnet answer?
An electromagnet is a magnet that runs on electricity. If a wire carrying an electric current is formed into a series of loops, the magnetic field can be concentrated within the loops. The magnetic field can be strengthened even more by wrapping the wire around a core.
How does an electro magnet work?
Electromagnets. Electromagnets are a different from permanent magnets. Electromagnets are made of coils of wire with electricity passing through them. Moving charges create magnetic fields, so when the coils of wire in an electromagnet have an electric current passing through them, the coils behave like a magnet.
What is an electro magnet class 10?
As long as the current is flowing through the wire, the iron bar remains a magnet. On stopping the current, the bar loses its magnetism. The temporary magnet produced by electricity is called an electromagnet. Uses – They are used in telephones , telegraphs, electric motors, electric bells etc.
What is an electro magnet class 7?
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the current is turned off. Electromagnets usually consist of a large number of closely spaced turns of wire or coilthat create the magnetic field.
What is an electromagnet class 7th?
Answer: An electromagnet is a coil of insulated wire wound around a piece of a magnetic substance such as soft iron. The magnetic substance acts as a magnet as long as the current flows in the wire.
What are electro magnets write two uses of electro magnets Class 7?
Applications of electromagnets
- Motors and generators.
- Transformers.
- Relays.
- Electric bells and buzzers.
- Loudspeakers and headphones.
- Actuators such as valves.
- Magnetic recording and data storage equipment: tape recorders, VCRs, hard disks.
- MRI machines.