Electricity & Electric Current
The buildup of charges on an object is called _____.
static electricity
This is the unit used to measure resistance.
ohms
In a ___________ circuit, there is only one path for current to take.
series
Magnetic poles that are alike _____.
repel
W O T
Number of poles that all magnets have
two
What causes charges to move in a circuit?
voltage (voltage difference)
He was a Serbian American that developed the AC motor.
Nikola Tesla
In a (an) ____________________ circuit, different parts of the circuit are on separate branches.
parallel
The region around a magnet where the magnetic force is exerted is known as its _____.
magnetic field
R I T E C D
Type of current that comes from a battery
direct
A complete, unbroken path through which electric charges can flow is a (an) _____.
circuit
Fe is the chemical symbol for what element?
iron
A switch can be used to open and close an electric ____________________.
circuit
An electric motor transforms ____________________ into mechanical energy.
electrical energy
C A N T G I M E
An electric current produces a (an) _____ field.
magnetic
Materials that allow the charges of an electric current to move freely through them are called _____.
conductor
What major world event was taking place when the steel penny was minted?
WWII
This is a small piece of metal that melts if current becomes too high, opening circuit.
fuse
These type of magnets easily loses their magnetism.
Temporary
N E R T T A N G A I L
Type of current that move back and forth in a circuit
alternating
An electric current will always follow the path of least _____.
resistance
What year was the steel US penny that was minted?
1943
These circuits are composed of both parallel and series circuits.
complex circuit
A magnetic ____________________ is a grouping of billions of atoms that all have magnetic fields lined up in the same way.
domain
M O R E N A G T E L C E T
Temporary magnet that has loops of wire around an iron core.
electromagnet