All electromagnets work on the principle that an electric current in a wire produces a magnetic field. … Simply coil a length of wire round a piece of iron, such as a long iron nail, and pass an electric current through the wire. When the current flows a magnetic field is created and the iron becomes magnetised.
What causes electromagnets to work?
An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. … The wire turns are often wound around a magnetic core made from a ferromagnetic or ferrimagnetic material such as iron; the magnetic core concentrates the magnetic flux and makes a more powerful magnet.
How is an electromagnet made answer?
An electromagnet is made by winding an insulated copper wire around a soft iron core either in the shape of a solenoid or U-shape and passing current through it. The strength of magnetic field of an electromagnet depends on: The number of turns of wire wound around the coil, and.
How are electromagnets constructed?
Electromagnets can be created by wrapping a wire around an iron nail and running current through the wire. The electric field in the wire coil creates a magnetic field around the nail. In some cases, the nail will remain magnetised even when removed from within the wire coil.
How is an electromagnet made Class 10?
The insulated copper wire is wrapped on a soft iron piece. When current is passed through the coil using a battery and a key the iron piece behaves like a bar magnet as long as current is being passed. Such a magnet is called an electromagnet.
How electric bell is working?
Electric bell is based on the principle of electromagnets. When switch is pressed, electromagnet is activated and the hammer moves and hits the gong. As the hammer moves, circuit breaks and the electromagnet is disabled. … This process is continuously repeated giving the ringing sound of the bell.
How is an electromagnet made answer in one sentence?
The long insulated copper wire is first wound on the iron nail. Then the two free ends of the wire is connected to the battery and the switch as shown. Now, when the switch is turned on, current flows through the circuit. Due to this flow of current, the insulated copper wire and iron nail acts as an electromagnet.