Magnetism
The properties and interactions of magnets in which there is a force of attraction or repulsion between like or unlike poles
What is magnetism?
The area around any electrically charged object where the object's force is exerted on other charged objects
What is an electric field?
Electric charges are from these two subatomic particles
Net movement of electric charges in a single direction through a wire or conductor.
A circuit that has only one loop through which to flow
What is a series circuit?
Made by placing a magnetic material in a strong magnetic field forcing domains to line up
What are permanent magnets?
Forms around a wire when electric current flows through it
What is a magnetic field?
The type of electricity caused by accumulation of excess electric charges on an object
What is static electricity?
Tendency for a material to oppose the flow of electrons
What is resistance?
A circuit that contains two or more branches for current to flow through
What is a parallel circuit?
The materials that are attracted to or can be made into permanent magnets.
What are iron, cobalt, and nickel?
Two ways to increase strength of a magnetic field in an electromagnet
What is adding turns to the wire coil or increasing the current passing through the wire?
The law that states that electric charges can be transferred from object to object but can't be created or destroyed.
What is the Law of Conservation of Charge?
A closed path through which electric current flows
What is a circuit?
The purpose of a circuit breaker
What is to bend when it gets too hot, opening the circuit and stopping current flow? (this keeps your house from burning down!)
Exerts a force on other magnets and objects made of magnetic materials.
What is a magnetic field?
A device that changes electrical energy into mechanical energy
What is an electric motor?
The process of transferring charge by touching
What is conduction?
A force that causes electric charges to flow
What is voltage difference?
Three examples of electric motors
What are blenders, hairdryers, fans, power windows, windshield wiper motors, electric door openers
Group of atoms with aligned magnetic poles (too small to be seen with your eyes.)
What are magnetic domains?
The difference in direct and alternating current
What is DC flows in only one direction and AC reverses direction in a regular pattern?
The rearrangement of electrons on a neutral object caused by nearby charged objects
What is induction?
Batteries produce electrical energy from this type of energy
What is chemical energy?
The direction in which magnetic field lines flow
What is north to south?