Electricity
Electric Current
Electrical Circuits
Magnetism
Magnetism & Electricity
Misc
100
a material that allows electrons to flow through it easily
conductor
100
net movement of electric charges in a single direction through a wire or conductor
electric current
100
A path that allows only one route for an electric current
series circuit
100
properties and interactions of magnets
magnetism
100
how to increase the strength of an electromagnet
add more turn to the wire coil or increase the current
100
like charges _____ and opposite chareges _____
attract, repel
200
material through which elctrons do NOT easily flow
insulator
200
force that causes electric charges to flow
voltage difference
200
small piece of metal that bends when it gets hot
circuit breaker
200
magnetic poles of atoms are aligned
magnetic domain
200
device that changes electrical energy into mechanical energy
electric motor
200
Ohm's Law states that current (I) equals _________ divided resistance
voltage difference
300
accumulation of excess electric charges on an object
static electricity
300
doing what 3 things to a wire can increase its resistance
making wires longer, thinner, and hotter
300
contains 2 or more branches for current to flow through
parallel circuit
300
exerts a force on magnets and other objects made of magnetic material
magnetic field
300
current that flow in only one direction through a wire
direct current (DC)
300
example of a wet-cell battery
car battery
400
electric charges can be transferred from object to object but can not be created or destroyed
Law of Conservation of Charges
400
in this type of battery chemical reactions occur in a moist paste causing the flow of electrons
dry cell battery
400
what happens to the current in an open circuit
current doesn't flow because the path isn't complete
400
regions on a magnet where the magnetic force is strongest
magnetic poles
400
strength of magnetic field depends on the amount of _________ flowing through the wire
current
400
large discharge of static electricity
lightning
500
two ways to transfer electric charge
induction and contact
500
tendency for a material to oppose the flow of electrons
resistance
500
What type of circuit is represented?
parallel circuit
500
3 metals that can be made into permanent electromagnets
iron, cobalt, nickel
500
what is an alternating current
reverses the direction of the current flow in regular pattern
500
atoms become charged by gaining or losing what?
electrons