Electromagnetism How can you make an electromagnet?

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Presentation transcript:

Electromagnetism How can you make an electromagnet? How can you make the electromagnet stronger/weaker?

Ways to strengthen a magnetic field Using a solenoid Using a electromagnet

Solenoid A coil of wire that produces a magnetic field when carrying an electric current

Solenoid What are two ways could you increase a solenoids’ magnetic field?

Solenoid To increase the strength of the magnetic field, increase the number of loops per meter AND/OR increase the current in the wire

Electromagnet Made up of a solenoid wrapped around an iron core The magnetic field of the solenoid makes the domains inside the iron core line up The magnetic field in the electromagnet is the field of the solenoid plus the field of the magnetized core Very useful…can be turned on and off