WorksheetsMagnets and Electricity
Total questions: 17
Worksheet time: 49mins
Name
Class
Date
1.
Produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet.
a)
generator
b)
electric motor
c)
electromagnet
2.
Transforms mechanical energy to electrical energy.
a)
generator
b)
electric motor
c)
electromagnet
3.
Changes electrical energy into mechanical energy
a)
generator
b)
electric motor
c)
electromagnet
4.
The coil of the electromagnet must be connected to a __________ or another source of electricity.
a)
battery
b)
wire
c)
magnet
5.
What is this device?
a)
electromagnet
b)
generator
c)
electric motor
6.
what can be attracted to magnets?
a)
wood
b)
skin
c)
Metals such as iron, nickel and cobalt
7.
What happens when two north poles of a magnet are placed together?
a)
they repel
b)
they attract
c)
they cancel each other out
d)
the strength of the magnet is doubled
8.
Where is the force of attraction the strongest on a magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
9.
What characteristics do magnetic substances have?
a)
They can give you a "shock" when you touch them
b)
They can push or pull objects without touching them
c)
They are always black and cold to touch
d)
They fall faster than other objects when you drop them
10.
Electricity is the flow of _________.
a)
Protons
b)
Neutrons
c)
Electrons
11.
Which of these objects is an insulator?
a)
Copper Wire
b)
Paper Clip
c)
Steel Pole
d)
Rubber Gloves
12.
Which statement is true?
a)
The light bulb will light up because the circuit is complete.
b)
The light bulb will light up because the circuit is broken.
c)
The light bulb will not light up because the circuit is complete.
d)
The light bulb will not light up because the circuit is broken.
13.
Which one is a conductor?
a)
wood
b)
iron
c)
plastic spoon
d)
paper
14.
What is an electromagnet?
a)
a temporary magnet made from current carrying wire around a magnetic metal core.
b)
a permanent magnet with a north and south pole
15.
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.
16.
How are electromagnets different from magnets?
a)
magnets can be turned on/off
b)
you can turn an electromagnet on/off
c)
magnets are more powerful
d)
magnets have a North and South pole
17.
Surrounding every magnet is a __________ __________.
a)
magnetic field
b)
electrical current
c)
another magnet
d)
an enemy
100 %
