Electromagnetic Power Point presentation

1. SCIENCE 5
QUARTER 3 WEEK 6
D
A
Y
1
ELECTROMAGNET

2. Review:
Write the letter of the correct schematic symbol to
its function.
1.Source of electricity.
2. Controls the flow of electricity from the source
( On/OFF).
3. The pathway of electricity from the source to the
load.
4. A device that uses electricity from the source.

3. Observe the picture below:
What can you say about the picture?

4. Examine the picture below:
What are the different parts of the simple
electromagnet?

5. All magnets belong to a group
of metals called the
ferromagnetic metals. These are
metals such as nickel and iron.
Each of these metals have the
special property of being able
to be magnetized uniformly.

6. It can attract objects such as pins,
coins, and other materials made up
of iron and steel. A nail is not a
magnet, but it can be turned into
one. This is done by coiling a wire
around it and then letting electricity
flow through it. Doing this turns the
nail into an electromagnet.

7. An electromagnet attracts like a real
magnet. It can attract materials made of
metals like pins and thumbtacks. The iron
nail acts as magnet while electricity from
the battery is flowing through the coil of
wire. When electricity stops flowing through
the coil to the nail it can no longer attract
the pin and thumbtacks. Electromagnets
are temporary magnets.

8. The Parts of an Electromagnet
A basic electromagnet has three
main parts: an iron core, insulated
wire and a power sources.
1. Iron core. Its purpose is to
concentrate the magnetic flux
produced by the current in the
area outside the wires.

9. 2. Wire/ Insulated wire. The wire serves as
the passage of the electric current
creating a magnetic field. The number of
turns of wire represents the power of the
electromagnet. The cable and wires
need to be insulated as it prevents the
current from coming into contact with
other conductors. It preserves the wire
material against environmental threats
and resists electrical leakage.

10. 3. Power source. It serves as
the source of electricity that
flows to the wire to create a
magnetic field. The amount of
current also affects the
strength of the
electromagnet.

11. Directions: Fill in the boxes with the materials that
make up an electromagnet. Choose your answer
form the words inside the box.

12. What materials that uses
electromagnets?

13. Using electromagnets, you can create
all sorts of things, including motors,
solenoids, hard disks and tape drives,
speakers, and many others.
Electromagnets have many uses.
1. It is used to transmit signals, as in the
telegraph, telephone, radio, and
television.

14. 2. It is also used for industrial purposes, such
as in motors, generators, and transformers.
3. The electromagnet in a crane is used to
lift heavy objects like metals, steel bars,
scrap iron, and cars.
4. Electromagnets are used in bells,
buzzers, chimes, circuit breakers, and other
electrical appliances in our homes.
5. Electromagnets run electric toys.

15. REMEMBER THESE:
 An electromagnet attracts like a real
magnet but it is a temporary magnet.
 The iron nail acts as magnet while
electricity from the battery is flowing
through the coil of wire.
 When electricity stops flowing through
the coil to the nail it can no longer attract
the pin and thumbtacks.

16.  An electromagnet can be
made stronger by using more
coils of wire.
 The number of battery or dry
cell also affects the strength of
an electromagnet.
 Electromagnets are used in
our home appliances and

17. Directions: Write TRUE if the statement
describes an electromagnet and FALSE
if not
__________1. Electromagnets are
temporary magnets.
___________2. Electromagnet attracts
the pins and thumbtacks when
electricity STOPS flowing from the
battery through the coil to the nail.

18. ___________3. Electromagnet is
made of battery, coiled wire and
nail.
___________4. Electromagnet can
be made stronger by using more
coils of wire.
___________5. The number of dry cell
or battery CANNOT affect the
strength of an electromagnet.

19. SCIENCE 5
QUARTER 3 WEEK 6
D
A
Y
2
ELECTROMAGNET

20. REVIEW: Directions: Fill in the boxes with the materials
that make up an electromagnet. Choose your answer
form the words inside the box.

21. Look at the following materials and name
them.

22. Can we make a simple
electromagnet using the
following?

23. Electricity can be used to produce
magnet. This kind of magnet is called
electromagnet. Iron nail with coiled
wire will not produce magnet. The
electricity from the battery used, flows
through the coiled and made the
metal and other magnetic materials
to be attracted to the iron nail.

26. The electromagnet uses the
magnetic effect of an
electric current. A wire
carrying current produces a
magnetic field in the region
around the wire.

27. Explore the link.
Online Simulation on Electromagnetism.
https://iwant2study.org/lookangejss/05elect
ricitynmagnetism_21electromagnetism/ejss_
model_EMStrengthpaperclips_numberofoco
ilandbattery/EMStrengthpaperclips_number
ofocoilandbattery_Simulation.xhtml

29. Directions: Write TRUE if the
statement is correct and FALSE if
not.
________1. Electricity cannot be
used to produce magnet.
________2. Battery is the source of
electricity in the experiment
performed.

30. ________3. Iron nail without
coiled wire and battery can
produce magnet.
________4. The use of battery
attracts staple wires.
________5. Electricity can be
used to produce magnets.

31. Which do you think is
better, a permanent
magnet or an
electromagnet?
Why?

32. Remember:
Electricity can be used to produce
magnet. This kind of magnet is called
electromagnet. Iron nail with coiled
wire will not produce magnet. The
electricity from the battery used, flows
through the coiled and made the
metal and other magnetic materials
to be attracted to the iron nail.

33. Directions: Read each question and
answer it with Yes or No. Write your
answer on the blank.
_______1. If we use of battery, coiled
wire and iron nail, can we produce
magnet?
_______2. Can electricity be used to
produce magnet?

34. _______3. Can iron nail produce magnets
without the use of battery and coiled
wire?
_______4. Is battery the source of
electricity in the experiment?
_______5. Can magnet can be produced
if we don’t use copper wire?

35. SCIENCE 5
QUARTER 3 WEEK 6
D
A
Y
3
ELECTROMAGNET

36. Review: Directions: Read each
question and answer it with Yes or No.
Write your answer on the blank.
_______1. If we use of battery, coiled
wire and iron nail, can we produce
magnet?
_______2. Can electricity be used to
produce magnet?

37. _______3. Can iron nail produce magnets
without the use of battery and coiled
wire?
_______4. Is battery the source of
electricity in the experiment?
_______5. Can magnet can be produced
if we don’t use copper wire?

38. Observe the picture below:
What can you say about the picture?

39. It is said that an electromagnet is
temporary and is called an
artificial magnet. It is a magnet
that is only magnetic when an
electric current is flowing
through it. If the flow of the
current is cut off, the property of
magnetism stops.

40. An electromagnet is a type of
magnet that produces its magnetic
field with the help of an electric
current. It attracts materials made of
metal. In constructing a simple
electromagnet, you need the
following materials such as iron nail,
copper wire and a dry cell or battery.

41. Observe the three pictures
below label picture A ,
picture B and picture C.
After carefully investigate
the three pictures write your
observation in the chart.

44. Guided questions
1. If you add coils to an electromagnet,
does the magnet get stronger or weaker?
Why?
_________________________________________
__________________________
2. What happens if the current increases?
_________________________________________
__________________________

46. 1. Which of the following
electromagnet will attract more
pins?
___________________________________
______________________
2. Why?
___________________________________
______________________

47. You were tasked to make a
strong electromagnet by
your teacher in Science.
What would you do to
make your electromagnet
set-up stronger?

48. Let’s Remember This
You can increase the strength of
the magnet by increasing the
number of coils. For example, if
you double the number of coils,
you double the strength of the
inductive field.

49. DIRECTIONS : Write the T if the statement is
correct and F if the statement is false.
_________1. To increase the strength of an
electromagnet, add more turns of the wire
around an iron nail.
________ 2. In making a simple
electromagnet consider the number of turns
around an iron nail to make the current flow
strong.

50. _______ 3. The strength of
electromagnet depends on the
number of coils of wire wrap on it.
________ 4. The more loops of wire,
the stronger the magnetic field
created.
________ 5. An electromagnet can be
made stronger by using less coils of
wire.

51. Bring the following materials
tomorrow:
½ meter wire
2 batteries
Staple wires
Iron nails
Electric tape.

52. Bring the following materials
tomorrow:
½ meter wire
2 batteries
Staple wires
Iron nails
Electric tape.

53. SCIENCE 5
QUARTER 3 WEEK 6
D
A
Y
4
ELECTROMAGNET

54. Review: DIRECTIONS : Write the T if the
statement is correct and F if the statement is
false.
_________1. To increase the strength of an
electromagnet, add more turns of the wire
around an iron nail.
________ 2. In making a simple
electromagnet consider the number of turns
around an iron nail to make the current flow
strong.

55. _______ 3. The strength of
electromagnet depends on the
number of coils of wire wrap on it.
________ 4. The more loops of wire,
the stronger the magnetic field
created.
________ 5. An electromagnet can be
made stronger by using less coils of
wire.

56. Observe the picture below.
What is in the
picture?
Does it apply
electromagnet?
Is it useful for the
workers?

57. Using electromagnets in
lifting heavy metals will
make your work easily. Big
construction company
uses electromagnets to
work fast.

58. How to make an electromagnet stronger?
An electromagnet can be made stronger by
using more coils of wire. Each turn of wire adds
more force to the electromagnet. The number of
battery or dry cell also affects the strength of an
electromagnet. More dry cells mean more
electrons flowing in the electromagnet and,
therefore, stronger magnetism is produced. The
size of the iron core also matters. The greater the
size of the iron core, the stronger magnetism has.

59. Activity Time!
Materials: Pieces of staple
wires, Battery, iron nail, thin
wire

60. Procedure:
1. Prepare the following materials.
2. Remove the insulator or cover of the
wire.
3. Get an iron nail wrap it with wire and
connect the battery at both ends of the
wire. Wrap with an electric tape.
4. place it near the staple wires.

61. Answer the following
questions:
What happen when you
place the electromagnet
near the staple wires?
Why?

62. List the different parts of a
Simple Electromagnet.
1.
2.
3.
4.

63. Like an electromagnet , if you
want to increase the strength
add more coil around an iron
nail. In your relationship to your
family members and
friends ,how can you make
other people will trust you most?

64. What have you
learned today?

65. Directions: Put a check
( /) mark in the picture
that shows electricity
can produce magnet
and mark (X ) if not.

67. SCIENCE 5
QUARTER 3 WEEK 6
D
A
Y
5
Catch-Up Friday