Show:
Magnetism
Electricity
Circuit
Conductors and Insulators
Electromagnets
100
What would happen if the north ends of two magnets were close together?
What is repel?
100

When electricity can flow only one direction is called?

What is direct current

100

An electrical circuit is made up of a connector (wire), a load (lightbulb), a switch, and a ____________.

What is an energy source or battery?

100
What is a material that lets electric current pass through?
What is a conductor?
100
True or False: An electromagnet is a permanent magnet.
What is False? An electromagnet can be turned on or off. Once the circuit is broken, the magnetism is lost.
200
If a south end of a magnet is close to a north end of a magnet, the magnets will _________.
What is attract?
200
True or False: Like charges attract and unlike charges repel.
What is False? Like charges repel and unlike charges attract.
200
What supplies current to an electrical circuit?
What is a battery (or other electrical source)?
200
What is a material that blocks an electric current from passing through?
What is an insulator?
200
True or False: An electric crane is an example of an electromagnet.
What is True?
300
True or False: All magnets have the same shape and size.
What is False?
300

If electric current flows because the switch is on, what kind of circuit is this?

What is an closed circuit

300

What type of circuit will allow other light bulbs to stay on even if one goes out?

What is a parallel circuit?

300
Which of these materials is not a conductor: copper, aluminum, gold, or wood?
What is wood?
300
True or False: A refrigerator magnet is a permanent magnet.
What is True? Even when you take it off the refrigerator, it is still magnetic.
400
True or False: All magnets have a north and south pole.
What is True?
400

What part of Ohm's Law is directly affected in a hand-crank generator? 

What is voltage?

400

What is the total resistance of a series circuit with these 3 resistors: 15 Ohms, 10 Ohms, & 5 Ohms?

What is 30 Ohms?
400
Which of these materials is a conductor: rubber, glass, air, silver?
What is silver?
400

What is the difference between an electric motor and a generator?

What is electric to mechanical for electric motor

What is mechanical to electrical for generator 

500
Will a magnet attract copper, rubber, iron, or plastic?
What is iron?
500

What is the voltage of a circuit if the resistance is 25 Ohms and Current is 25 Amps?

What is 625 Volts?

500

What are the four parts of an electric motor?

What are: magnets, wires, source of electricity, & axle.

500
True or False: Pure water is a conductor.
What is False? The salts and other materials in water are conductors though. So, don't mix water with an electrical circuit!!!!
500

Doing all these things will increase the power of an electromagnet. (4 things)

What is bigger metal core

What is larger battery/current

What is more coils around the nail/core

What is using less resistant wires