Yes true. Even without the iron core as current passes through the coil then the coil would act as a magnetic shell. If the wire is wound in a helical form, then the device is known as solenoid. So with the current in the solenoid it would act as if a bar magnet. If iron core is introduced then the magnetic lines would be concentrated and hence an intense magnet could be produced. The pole of this system will be determined by using 'end rule'.
The piece of metal is called a ferromagnetic material, and the phenomenon where it becomes magnetized when an electric current flows around it is known as electromagnetism.
An electromagnet works by creating a magnetic field when an electric current flows through a coil of wire. This magnetic field attracts ferromagnetic materials, such as iron, causing them to be magnetized temporarily as long as the electric current is flowing.
Electric energy flows through a wire when an electric current passes through it.
An electromagnet does not contain permanent magnets. It consists of a coil of wire wrapped around a ferromagnetic core, such as iron, that becomes magnetized when an electric current flows through the coil.
A magnetic field is formed around the conductor when an electric current flows through it. The strength of the magnetic field is directly proportional to the magnitude of the current flowing through the conductor.
The piece of metal is called a ferromagnetic material, and the phenomenon where it becomes magnetized when an electric current flows around it is known as electromagnetism.
electromagnet
electromagnet
This is called an elecro-magnet, and it is only magnetized while current is running through it.
An electromagnet works by creating a magnetic field when an electric current flows through a coil of wire. This magnetic field attracts ferromagnetic materials, such as iron, causing them to be magnetized temporarily as long as the electric current is flowing.
When an electrical current flows through a wire it creates what is called an Electro Magnetic Field.A magnetic field is create when an electric current flows through a wire.
Electric energy flows through a wire when an electric current passes through it.
A magnet created when electric current flows through a coil of wire is called an electromagnet.
"circuit"
An electrical current.
An electromagnet does not contain permanent magnets. It consists of a coil of wire wrapped around a ferromagnetic core, such as iron, that becomes magnetized when an electric current flows through the coil.
electric current