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Magnetic Field - Coggle Diagram
Magnetic Field
Electromagnets:
Soft metal core made into a magnet due to an electric current flowing through a coil surrounding the core
Typically made from a coil of copper wire (solenoid)
Electrical current produces magnetic field around (inside and outside) coil.
Advantage: can be switch on and off
How does current produce a magnetic field?
-When electric current passes through a wire, it creates a magnetic field.
Magnetic fields are visualized as lines that surround the wire with the electric current flowing through it.
-The direction of magnetic field depends on where the wire is placed as the current in the wire is in a different position.
How to increase the strength of an electromagnet?
Increase the current flowing through it
Increase the number of turns of wire on the coil
Use a soft iron core
Types of wires that can be used to create a magnetic field:
Coiled Wire: Creates a magnetic field that is present around and in the gap of the whole wire.
Straight Wire: Creates a circular magnetic field when the wire contacts the object that reacts with the electric current
What is a Magnetic Field?
A magnetic field describes a volume of space where there is a change in the energy.
