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electromagnetism

Total questions: 15

Worksheet time: 30mins

Name
Class
Date
1.

A magnet will pick up an object that is made of...

a)

plastic

b)

iron or steel

c)

glass

d)

copper

2.

The strongest parts of the magnet are ...

a)

fronts

b)

backs

c)

poles

d)

middle

3.

The area around a magnet is called the .....

a)

attraction zone

b)

work area

c)

magnetic field

d)

hot zone

4.
The picture is an example of an:
a)
Electric circuit
b)
Electromagnet
c)
Electric nail
d)
Electric power cell
5.
What is true about electricity and magnetic fields?
a)
Electricity is needed to create any magnet.
b)
Electricity always creates a magnetic field.
c)
Electricity is stronger than a magnetic field.
d)
Electricity prevents magnetic fields from occurring.
6.
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.
7.
Are the magnetic field lines in the picture correct?
a)
Yes, because they point from north to south.
b)
No, because they point from north to south (they're supposed to go the other way).
c)
Yes, because the North pole is on the left in all pictures.
d)
No, because the North pole is on the left in all pictures (it's supposed to be on the right).
8.

When running a current through a wire, what do the blue lines represent?

a)

The wire spinning

b)

A magnetic field that was created

c)

Electrons leaving

d)

Electricity

9.

Which one represents the magnetic field lines of magnets repelling?

a)

A

b)

B

10.
Electromagnetism is when
a)
magnetism causes electricity
b)
electricity causes magnetism
c)
electricity and magnetism cancel each other out
d)
a strong magnet creates a permanent magnet
11.
Electromagnetism is when
a)
magnetism causes electricity
b)
electricity causes magnetism
c)
electricity and magnetism cancel each other out
d)
a strong magnet creates a permanent magnet
12.
How would flipping the magnet in this experiment change the current?
a)
The current would not change
b)
The current would go to the right
c)
There would be no current
d)
The current would go CRAZY
13.
A generator is used to light a bulb.  Energy for lighting the bulb actually comes from a
a)
coil or wire
b)
mechanical intput to the generator
c)
magnet in the generator
d)
plug where the generator is connected to the wall
14.

____________law states that the direction of the induced current is such that it always _______ ___ the change producing it.

a)

Lenz's Law, oppose

b)

Faraday's Law, oppose

c)

Lez's Law, follow

d)

Faraday's Law, follow

15.

Faraday’s Law states that the magnitude of the induced e.m.f. is _________________ to the rate of change of magnetic flux linkage with the solenoid.

a)

equal

b)

inversely proportional

c)

directly proportional

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