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- 1. Multiple Choice
What is a major difference between electric charges and magnetic poles?
Electric charges can exist on their own.
Magnetic poles can exist on their own.
There are no differences.
- 2. Multiple Choice
What is a magnetic field?
A force field
a magnetic field does not exist
stationary electric charge
- 3. Multiple Choice
What is the source of a magnetic field?
Moving electric charge
Stationary Electric Charge
There is no source.
- 4. Multiple Choice
A north pole of the magnet is brought near a south pole
they will repel
they will attract
so? nothing will happen
- 5. Multiple Choice
In order to make an electromagnet, you need
a magnet, a nail, some wires
a battery, a nail, and a magnet
a battery, a coil of wire, and a nail
a loop of wire, contacts, and a battery
- 6. Multiple Choice
How can you destroy a magnet? Choose all that apply.
Drop It
Heat It
Cover it with paper
You can't destroy it
- 7. Multiple Choice
if you break a bar magnet in half
the poles will seperate
You will have two complete magnets
it becomes unmagnetized
- 8. Multiple Choice
Which pole of the compass needed points to a south pole of a magnet?
South pole
North Pole
Both poles
- 9. Multiple Choice
magnetic fields run from _________ pole to ___________ pole
North, South
South, North
They do not exist
- 10. Multiple Choice
What makes electromagnets different from regular magnets?
they can be switched off and on
they use less energy
they are more user-friendly
they do not pollute the environment
- 11. Multiple Choice
What is the device shown?
Solenoid
Electromagnet
Generator
Motor
- 12. Multiple Choice
What happens when a compass is moved near a strong magnet?
it points north
it points toward the magnet
it spins in circles
it doesn't move
- 13. Multiple Choice
The Right Hand Rule says that if you hold a wire in your right hand and point your thumb in the direction of the ______ current, the direction that your fingers curl is the direction of the _______.
Positive, Magnetic Field
Positive, Current
Negative, Magnetic Field
Negative, Current
- 14. Multiple Choice
___, ____, and ____ are magnetic metals.
Iron, Nickel, Cobalt
Copper, Chromium, Gadolinium
Aluminum, Iron, Copper
Cobalt, Mercury, Sodium
- 15. Multiple Choice
What is the device shown?
Electromagnet
Solenoid
Generator
Motor
- 16. Multiple Choice
Which kind of circuit only has one path for electricity to flow?
Series
Parallel
Series and Parallel
- 17. Multiple Choice
If a bulb is not working in a series circuit, what happens to the other bulbs?
none will work
the rest will work
- 18. Multiple Choice
If a bulb is not working in a parallel circuit, what happens to the other bulbs?
none will work
the rest will work
- 19. Multiple Choice
When a current flows through a wire, it creates a _______ around the wire.
magnetic field
magnetic pole
compass
attraction
- 20. Multiple Choice
Which three materials would allow you to build an electromagnet?
Battery, Wire, Nail
Battery, Tape, Paper
Wire, Nail, Paper Clip
Sandpaper, Tape, Wire
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