Any material that attracts iron or materials containing iron
What is a magnet?
100
a coil that has a soft iron core and that acts as a magnet when an electric current is in the coil.
What is an electromagnet?
100
a coil of wire that produces a magnetic field when carrying an electric current
What is a solenoid?
100
a device that converts mechanical energy into electrical energy
What is an electric generator?
100
The two parts of a magnetic field are known as these.
What are the north and south pole?
200
One of two points, such as the ends of a magnet, that have opposing magnetic qualities.
What is a magnetic pole?
200
Created when a wire moves between the poles of a magnet
What is an electric current?
200
Wires being wrapped closely to each other in a solenoid causes this
What is a larger magnetic field?
200
a device that increases or decreases the voltage of alternating current
What is a transformer?
200
This is created when electrons move (NOT electricity)
What are magnetic fields?
300
the field created by moving electric charges
What is magnetic field?
300
Faraday discovered that magnetic fields are created when this happens.
Magnetic fields are made when the electric field changes.
300
This strengthens the solenoid's magnetic field (NOT adding more wire)
increasing the electric current in the wire
300
A device that is made with only a single coil of wire that has current running through it
solenoid (also, electromagnet)
300
To determine whether a material is magnetic or not depends on what?
What is the materials atoms?
400
the process of creating a current in a circuit by changing a magnetic field
What is electromagnetic induction?
400
Galvanometers use ___________ to detect ____________
What are magnets and current.
400
When there is no electric current in a solenoid, it is...
turned off.
400
A transformer that induces a larger current in the secondary coil is known as this.
What is a step-up transformer
400
In iron, nickel, and cobalt, there are groups of atoms in tiny areas known as these.
What is the domain?
500
a device that converts mechanical energy into electrical energy
What is an electric generator?
500
When an electrically charged particle moves through a magnetic field, it experiences a force that is perpendicular to ____________________ and _____________________.
The velocity and the magnetic field
500
This kind of current is produced from a generator.
What is alternating current (AC)
500
A microphone is a device that works when _____________, and it is essentially the same as a ____________________.
a coil of wire is vibrated in a magnetic field
a speaker