Atoms are made up of these three types of subatomic particles.
What are protons, neutrons, and electrons?
100
This is unit of measurement for current.
What are amperes (or amps)?
100
Electric current must flow through a path that is this in order for a circuit to be complete.
What is closed?
100
A magnet has two poles, called these.
What are north and south poles?
100
This is a region in space near a magnet or electric current in which magnetic forces can be detected.
What is a magnetic field?
200
Electricity is caused by the movement of these subatomic particles.
What are electrons?
200
This is the rate at which electric energy is converted to other energies, such as light or sound.
What is power?
200
This element is one of the best conductors of electricity. It is often used in wires.
What is copper?
200
Two like poles of a magnet will do this to each other.
What is repel?
200
This is the movement of electric charges through a material.
What is an electric current?
300
This is a buildup of electric charges.
What is static electricity?
300
This is the amount of force that allows electric charges to flow.
What is voltage?
300
This kind of circuit is shown in Figure 1.
What is a series circuit?
300
As the distance from a magnet increases, the amount of magnetic force does this.
What is decrease?
300
This is a material that prevents electricity from passing through.
What is an insulator?
400
Opposite charges (positive and negative) do this.
What is they attract?
400
A calculator uses a 9-V battery and draws 0.1 A of current. How much power does it use? (power = current x voltage)
What is 0.9 W?
400
This circuit in Figure 2 is a parallel circuit. This is why.
What is there are multiple paths for the electricity to flow?
400
These are the two ways to increase the magnetic strength of an electromagnet.
What are increase the number of coils and increase the voltage?
400
This is a temporary magnet that is made from wrapping an electric current carrying wire around an iron core.
What is an electromagnet?
500
When someone touches a Van de Graaff generator, this is the reason why his or her hair sticks up.
What is there is a build-up of like (negative) charges?
500
This is the amount of current that flows through an 80-W light bulb that is plugged into a 150-V outlet. (round to the nearest tenth) (power = current x voltage)
What is 0.5 A?
500
In Figure 3, these are the bulbs that would be lit.
What are A and D?
500
Magnetic materials have these that act as miniature magnets. In a permanent magnet, each of their poles are always lined up.
What are domains?
500
A material the slows the flow of an electric current is called this. The filament inside a light bulb is an example of one.