Electricity
What is an electric charge?
Positive or negative and exerts a force on each other.
What is an Electric current?
The steady flow of electrons. (electric charges)
what is a circuit?
A closed conducting loop that electric charges flow through continuously.
What are magnets?
Objects that exert an invisible force called magnetic force.
What is an electromagnet?
A current carrying wire wrapped around an iron core.(Temporary magnet)
What is the law of electric charge?
Like charges repel. Unlike charges attract.
What is voltage?
The amount of electric energy in an electric current.
What is a series circuit?
A circuit that has only one path for the electric current to follow.(Voltage shared)
What are magnetic fields?
The space around a magnet where the magnetic force is.
What is an electric motor?
A machine that charges electrical energy into mechanical energy.
What is an electric field?
The space in which charges exerts a force on each other.
What is resistance?
The measure of how difficult it is for electrons to flow through a material.
what is a parallel circuit?
A circuit that has more the for an one path for the electric current to flow.(Same amount of voltage)
How are magnetic fields made?
When moving electrons spin as they rotate.
What is a generator?
The use of electromagnetic induction to change mechanical energy into electrical energy.
What are the 2 types of electric charges?
Positive and negative.
What are the 4 factors that affect the amount of resistance?
Material of wire, length of wire, the thickness of wire, and temperature.
What are the 3 components of an electric current?
Power source,conductor,and resistance.
What is a magnetic domain?
A large group of atoms with their magnetic poles lined up in the same direction.
What is Alternating current?
Reverses the direction of the current in a regular pattern.Produced by generators.
What is static electricity?
An imbalance between the negative and positive charges in objects.
What are the units of measure for electric current, voltage, and resistance?
Amps, Volts,and Ohms
What is a circuit breaker and how does it work?
A safety device that stops wires in your home from getting to hot ,it flips the switch when the circuit overloads and the current is too high.
What is the difference between a temporary magnet and a permanent magnet?
A temporary magnet is object that becomes a magnet while it's object that becomes a magnet while it's magnetization. A permanent is an object that keeps it's magnetic properties for a long time.
What is Direct current?
Current that flows in only one direction, produced by a battery.