WorksheetsElectromagnets
Total questions: 13
Worksheet time: 7mins
Name
Class
Date
1.
What effect will the south pole of one magnet have on the south pole of another magnet?
a)
Repulsive
b)
Attractive
c)
Combative
d)
No effect
2.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
3.
What kind of magnet can be turned on and off?
a)
refridgerator magnet
b)
electromagnet
c)
magnetite
d)
iron
4.
Surrounding every magnet is a __________ __________.
a)
magnetic field
b)
electrical current
c)
another magnet
d)
an enemy
5.
In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.
a)
wire, iron, electric
b)
electric, wire, iron
c)
iron, electric, wire
d)
excited, hair, apple
6.
What is most likely to happen when the switch is closed?
a)
A magnetic field should be produced
b)
The nail will rust
c)
The battery will explode
d)
The wire will catch on fire
7.
What are the ends of a magnet called?
a)
East and west poles
b)
Left and Right ends
c)
North and South ends
d)
North and South poles
8.
The attraction or repulsion created by spinning electric charges is called -
a)
A. electric generator
b)
B. magnetic force
c)
C. solenoid
d)
D. electromagnet
9.
Any material that attracts iron or materials containing iron is a(n)
a)
A. electric generator
b)
B. solenoid
c)
C. magnet
d)
D. magnetic force
10.
How do electromagnets differ from regular magnets?
a)
A. They can be turned off and on
b)
B. Their polarity can be reversed
c)
C. Their strength can be changed
d)
D. All of the above
11.
A compass needle responds to a magnetic field, because the compass needle is a
a)
A. generator.
b)
B. motor.
c)
C. magnet.
d)
D. transformer.
12.
Where does a magnetic field occur in relation to an electrified wire?
a)
At either end, but not in the middle
b)
Only the side closest to source
c)
Around the entire length of wire
d)
Only the side furthest from source
13.
Why are paper clips attracted to magnets?
a)
They contain silver.
b)
They contain aluminum
c)
They contain tin.
d)
They contain iron.
100 %
