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What two things are needed to make an electromagnet?
To make an electromagnet, you need a coil of wire and a source of electrical current. When the electrical current flows through the wire coil, it creates a magnetic field, turning the coil into a magnet.
What can induce an electrical current in a wire?
An electrical current can be induced in a wire by a changing magnetic field passing through the conductor. This phenomenon is known as electromagnetic induction, and it is the basis for the operation of generators and transformers. Moving the wire through a magnetic field or changing the magnetic field around the wire can result in the generation of an electrical current.
What does a changing magnetic field induce?
An electrical current.
What surrounds every electrical current?
An electromagnetic field.
What is the magnetic field that is produced around a wire when an electrical current flows through it?
When an electrical current flows through a wire, it creates a magnetic field around the wire.
How can an electrical current produce a magnetic field?
When an electrical current flows through a wire, it creates a magnetic field around the wire. This is because the moving electric charges in the current generate a magnetic field according to the right-hand rule of electromagnetism.
How does a coil of wire create a electrical current?
By itself, it won't. To have an electrical current, you need a voltage. This voltage might be applied externally, or it might be induced by movement of the wire through a magnetic field (or by a changing magnetic field).
What is an electrical current and what causes it?
Electrical current is nothing but movement of electrons in case of metals. It causes heating and produces magnetic field.
What is an electrical current that produces a magnetic field?
The deflection of a magnetic compass in the presence of an electric current, is evidence that an electric current produces a magnetic field.
Does the magnetic field increase or decrease if the current is decreased?
An increase in an electrical current will cause magnetism to increase but a decrease in an electrical current will cause magnetism to decrease.
What is evidence that an electrical current produces a magnetic field?
The deflection of a magnetic compass in the presence of an electric current, is evidence that an electric current produces a magnetic field.
How is electricity used to create a magnet?
If an electrical current flows, there will be a magnetic field. This is a law of nature; so all you need to do - basically - is make sure a current flows. The current should be DC.
