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Electromagnet
Test Description: Electromagnet
Instructions: Answer all questions to get your test result.
1) To build an electromagnet, you will need
A
a battery, wire, and paper clip
B
a battery, nail and paper clip
C
a battery, wire, and pencil
D
a battery, wire, and nail
2) What is the main difference in an electromagnet and bar magnet?
A
An electromagnet is just a large bar magnet.
B
An electromagnet can be turned on and off.
C
A bar magnet is not permanant.
3) If you wrap a wire around a nail 15 times and attach a battery, you can pick up 2 paper clips. What do you need to do in order to pick up more paperclips?
A
take the wire away
B
take the battery away
C
add more paper clips
D
wrap the wire around more times
4) An electromagnet is
A
temporary
B
permanant
5) A bar magnet is
A
temporary
B
permanant
6) Can a nail be magnetic?
A
no
B
yes if electricity is added to it
7) Where would you find an electromagnet?
A
in Walmart
B
in your bookbag
C
in a junk yard
8) An electromagnet
A
is a permanent magnet.
B
makes a mess.
C
makes a magnet out of a metal object that is not normally a magnet.
9) What could an electromagnet pick up?
A
wood
B
copper
C
paper
10) Is electricity needed to create an electromagnet?
A
yes
B
no
*select an answer for all questions
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