Vocabulary
This refers to the properties and interactions of magnets
What is Magnetism?
Every magnet has 2 poles. Those poles have names
What are the north and south poles
This interaction between electric charges and magnets is referred to as.
What is electromagnetism
There are 2 types of transformers
What is Step up and step down.
This force is the attractive or repulsive force between electric charges and magnets
What is electromagnetic force?
a region of space that surrounds a magnet and exerts a force on other magnets and objects made of magnetic materials
What is a magnetic field
A compass needle always points toward the_____.
What is the north?
This creates a temporary magnet created when there is a current in a wire coil
What is an electromagnet
An Example of AC and an example of DC
AC- wall outlet
DC- Battery
This device uses electromagnetic induction to transform mechanical energy into electrical energy.
What is a generator
The regions of a magnet that exert the strongest force are?
What are the magnetic poles
there is 1 key difference between a magnetic item and a non magnetic item. That difference is?
What is electrons canceling out.
There are 2 ways to increase the strength of the magnetic field produced by an electromagnet what are they.
What are increasing the current or the number of loops of the wire.
The generation of an electric current by a changing magnetic field is referred to as.
What is electromagnetic induction?
This device increases or decreases the voltage of an alternating current
What is a transformer?
These groups of atoms with aligned magnetic poles are called?
What are magnetic domains.
A magnetic field always points away from this pole and toward this pole.
what is away from the north and toward the south
This changes electrical energy into mechanical energy
What is an electric motor?
Wind, water, and steam spin these to create energy
What is a turbine
Electric current travels always in one direction
What is Direct current? (DC)
This device uses an electromagnet to measure electric current
What is a galvanometer
The magnetic field can be represented by lines of force.
What are magnetic field lines.
A single wire wrapped into a cylindrical wire coil is called?
What is a Solenoid?
V out/ V in= N2/N1 what do these stand for.
What is output voltage/input voltage= turns in secondary/turns in primary
Electric current that reverses the direction in a regular pattern.
What is alternating current? (AC)