Vocabulary
Characteristics of Magnets
Producing Electric Current
Uses of Magnetics
100
A device that uses electromagnetic induction to induce electrical current by rotating 100 ps of wire through a magnetic field
What is a generator
100
These of opposite poles attract
What is magnets
100
Before current in power lines can enter your home, it must pass through a
What is step-down transformer
100
An American scientist that found that moving a wire through a magnetic field induced an electric current in that wire
What is Joseph Henry
200
A device that can increase or decrease the voltage of an alternating current
What is a transformer
200
This is the region around the magnet where magnetic forces act
What is direct current
200
A device that changes electric energy to mechanical energy
What is an electrical generator
200
When you use a dry-cell battery to run your stereo you are using what kind of current?
What is a direct current
300
Groups of atoms with aligned magnetic poles
What is magnetic domains
300
A region around the magnet where magnetic forces act
What is a magnetic field
300
An example of an instrument that uses an electromagnet
What is a music controller
300
Where you get your electricity from that runs the appliances in your house
What is a power plant or generator
400
Measures electric current
What is ammeters
400
Contains a magnetic needle that freely rotates in a circle and always points north
What is a compass
400
A house hold device that uses electromagnets to convert electric energy to mechanical energy
What is a generator
400
Can increase or decrease the voltage of an alternating current
What is a transformer
500
A mineral with natural magnetic properties
What is magnetite
500
Groups of atoms with aligned magnetic poles are called
What is magnetic domains
500
Measures potential difference across part of a circuit
What is a voltmeter
500
Reverses its direction in a regular pattern
What is alternating current
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