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Electromagnets - Coggle Diagram
Electromagnets
Uses
Scrap-yard cranes
electric bells
Relays
electric motors
MRI machines
Loudspeaker
Main parts
Copper Wire (Insulated)
Iron nail
Battery
Switch
How to make it stronger
More turns of the wire
Stronger elctromagnet
Use an iron core
Increase the number of wire coils
Increase current
What is an electromagnet
A magnet made using electricity is called an electromagnet
It is magnetic only when electric current flows through it
Can be switched on or off
How does it work
Electricity flows through the wire,creating a magnetic field
Iron core strengthens the field
Turning off removes the magnetism
Advantages
Can be switched ON/OFF
Strength can be changed
Useful for lifting and controlling objects