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Simply, a length of wire, wrapped round to form a coil. Pass electrical current through it and it forms a magnetic field.
The field can be intensified by wrapping the coil around a soft iron core.
Soft iron, is iron that does not easily hold a permanent magnetic field, therefore when the current stops flowing, it ceases to be a magnet. It is an electromagnet. It only becomes a magnet when current flows through the coil.
A practical home experiment. use about 2 metres of bell wire (small, single core with plastic sleeving). Use a 6" nail. Wrap all the wire around the nail leaving a a few inches hanging out at each end.
Connect the wire ends to either side of a large torch battery.
You can now pick up pins. Release the wire and the pins drop.
Use a 6v lantern battery for more power.
DO NOT USE MAINS POWER. or car battery.
What else can I help you with?
During electromagnetic blank a changing magnetic field can produce an electric charge?
Electromagnetic induction is the process where a changing magnetic field induces an electric current in a conductor. This phenomenon is the basis for how generators produce electricity and is a fundamental concept in electromagnetism. It is described by Faraday's law of electromagnetic induction.
Which is an electromagnetic device?
An MRI machine is an example of an electromagnetic device, using magnetic fields and radio waves to produce detailed images of the inside of the body.
How do generators produce electricity?
Generators produce electricity through electromagnetic induction. When a coil of wire rotates within a magnetic field, it creates a flow of electrons, generating an electric current. This current can then be harnessed and used to power electrical devices.
How many trees are typically needed to produce a cord of wood?
On average, about 500 trees are needed to produce a cord of wood.
Are Nitrates are needed to produce glucose?
No nitrates are not needed.Mainly CO2 and water is needed
What produce electromagnetic radiation?
in physics, electromagnetic radiation occurs when charged particles have forces acting on them to accelerate them. Electrons are responsible for the force needed to create electromagnetic radiation.
What materials are needed to produce electromagnetic power using copper?
To produce electromagnetic power using copper, you will need copper wire, a magnet, and a power source. When a magnet is moved through a coil of copper wire, it induces an electric current in the wire due to electromagnetic induction, generating electrical power.
When are no electromagnetic waves produce?
In a vacuum
Does walking produce electromagnetic energy?
Walking produces motion, not electromagnetic energy.
What force of two similar ends of magnets produce?
Magnets always produce an electromagnetic force- between the similar ends of magnets it is electromagnetic repulsion.
How do generator's produce electricity?
generators produce electricity via electromagnetic induction
How do generators produce electrity?
generators produce electricity via electromagnetic induction
Can rhythmic movement of air molecules produce electromagnetic waves?
No, the rhythmic movement of air molecules does not produce electromagnetic waves. Electromagnetic waves are generated by the oscillation of electric and magnetic fields and do not require a medium, such as air, to propagate.
Would a vibrating neutron produce electromagnetic wave?
no.
What vibrated to produce electromagnetic waves?
An electric charge.
Does a toaster produce electromagnetic energy?
Yes, a toaster does produce electromagnetic energy in the form of heat to toast bread. When the toaster is turned on, the heating elements inside the toaster generate heat through electrical resistance, which is a form of electromagnetic energy.
What is needed for electromagnetic induction?
An electric current is produced by the change in Magnetic flux over timeRead more: How_do_electromagnets_work
