Discovery of Electromagnetism
Using Electromagnetism
Applications of Electromagnetism
Electric Generators
Transformers
100
A magnet
What is a compass needle
100
A coil of wire with an electric current in it.
What is a solenoid
100
Makes electromagnetism useful n everyday life.
What is because they can b used to lift heavy objects
100
A device that converts mechanical energy into electrical energy.
What is an electric generator
100
A transformer with two iron coils around an iron ring.
What is a simple transformer
200
Depends on the direction of the field.
What is the direction of the current
200
Two devices that help with electromagnetism.
What is a solenoid and a electromagnet
200
An electromagnet device used on doors.
What is a doorbell
200
The electric current leaves the generator when the slip rings touch a pair of these.
What is a pair of brushes
200
A device that increases or decreases the voltage of alternating currents.
What is a transformer
300
Time When the relationship between electricity and magnetism was founded.
What is the 1820s.
300
Makes the solenoid even stronger.
What is increasing the number of loops.
300
Has a field only when a current is running through it.
What is a solenoid
300
These are attached to the ends of the wire in the coil.
What are slip rings.
300
This changes as the direction of the current changes.
What is the magnetic field
400
the interaction between electricity and magnetism.
What is electromagnetism
400
Makes electromagnets useful.
What is because they can be turned off and on
400
Attract things only with an existing wire.
What is an electromagnet
400
As this is turned, the rotating coil crosses the magnetic field lines of the magnet, and an electric current is induced in he wire.
What is a crank
400
This type of transformer increases voltage and decreases current.
What is a step up transformer
500
Something that produces a magnetic field.
What is an electric current
500
A train that uses magnets to levitate.
What is maglev
500
State of electromagnet with no current running through it.
What is turned off
500
This moves between the poles of the magnet and cuts through the magnetic field lines creating an electric currentl.
What is a wire
500
Has more loops than a secondary coil on the step down transformer.
What is the primary coil.
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