Current Notes Flashcards
Electricity is the flow of tiny particles called__
Electrons
Electrons are part of ___
Atoms
The word circuit means “___”, therefore a circuit is a ___ around with electricity (or water) flows
- Go around
2.closed path
Electrons flowing through a wire can be compared to __ flowing through a hose. Once the flow of electrons or water is going, ___, is performed
1.Water
2.work
You would get shocked in a bumper car by touching the ___and the ___at the same time. This means that you are completing the ___ allowing electricity to flow
1.Flour
2.cealing
3.circuit
Electricity from a wall outlet has enough energy to stop your ___
Heart
Electricity is the ___ of electrons, because electrons ___ from atom to atom
1.Flow
2.jump
Materials that allow electrons to
Move easily from atom to atom are called ___
Conductor
Materials that do not allow electrons to flow easily are called ___
Insulator
Materials that are somewhere in between
Resistors
the force or pressure of electricity and is compared to the amount of water pressure in a hose
Voltage
The amount of electricity and is compared to the amount of water in a hose
Amps
term used for work performed by electricity
Power
Hair sticking up has a ___ charge. Why? It is missing ___
1.Positive
2.electrons
What is the shock felt caused by?
Flow of electrons
What did we use before electricity?___
Steam power
What type of energy does a battery have?
Potential.
Electricity must have a ___. If it is just sitting there its considered___
1.Loop
2.static
Atoms which can pass electrons are called ___
Conductor
Atoms that do not have free electrons are called ___
Insulators
With current applied the free electrons, with copper atoms, will move in ___ direction between other atoms.
Same
Circuits
Route electrons can flow easily
Voltage=
a pushing force of electrons within a circuit
More voltage=
More electrons
ELectrons can flow if circuit is ___, when circuit is ___, no electrons can flow
1.Closed
2.Flow
Resistance-
A restriction to the flow of electrons which is measured in ohms
Longer the wire=____, Thicker the wire =___
Greater resistance
Lower resistnance
Resisters-
Restrict the flow of electrons
Low collision rate=copper
High collision rate=Iron
How do we increase the strength of magnetic fields
Increase current
Increase current turns
Passing magnetic field through a coil will induce a ___ and ___ to flow
Voltage
Current
Induce the voltage into second coil when alternatiing current is used
Transformers
How do you increase or decrease the voltage between the primary and secondary coils
Change the amount of coils on either side
What does a capacitor store
Stores an electronic charge
Where can you normally find capacitors
In circuit boards
Types of electricity
Types of electricity
Alternating Current (AC)
Current that moves back and forth with a changing magnetic field Most common type
Where can you find it?
Wall sockets
Direct Current (DC)
Is a current that travels in one direction
Where can it be found
Batteries and hand held devices.
