Magnetic field

PRACTICUM REPORT
BASIC PHYSICS II
"MAGNETIC FIELD"
COLLECTION DATE: 10th
of March 2018 M
DATEPRACTICUM: 04th
of March 2018 M
NAME : Utut Muhammad
"MAGNETIC FIELD"
FINALPRACTICUM
A. DESTINATIONPRACTICUM
1. Analyzing the relationship between the magnetic field and the magnetic
induction
2. experiments Proving Hans Christian Oersted
3. Menagatahui variables that affect the magnitude of field magnets
4. Knowing the influence of polarity on compass needle deviation
5. Understanding the material in the magnetic field
B. BASIC THEORY
The magnetic field is defined as an area (space) around a magnet
that is still affected by magnetic force. Magnets are often interpreted as
objects that can attract other objects. The magnetic pole that points north is
called the south pole and the magnetic pole that leads south is called the
north pole. This is because the magnetic pole of the earth is opposite to the
direction of the earth's poles. Two similar magnetic poles that are brought
close together will reject and two similar magnetic poles that are brought
close together will reject and two magnetic poles will not attract one
another. (Anonim.id, scribd.com. 2014)
The magnetic field is a force field that is around a magnetic object
or around a current generator. The magnetic field can be drawn with lines
of magnetic force that always come out of the magnetic north pole and enter
the magnetic south pole. (Kamajaya, 2008: 154)

The earth's magnetic field and the magnetic field on the stem are the
same because in the earth's magnetic field there is a pattern of magnetic field
lines that shows like there is an imaginary rod magnet inside the earth.
because the north pole (N) of the compass needle points to the earth, the
magnetic pole in the geographic north of the earth is magnetically the south
pole. The earth acts like a very large magnet. But the earth's magnetic pole
does not lie in its geographical pole (on the Earth's axis of rotation)
(Giancolli, 2014: 138).
The direction of the magnetic field in an electric current coil can be
remembered in a simple way. A simple way to remember the direction of
magnetic field lines is called the right-hand rule, by imagining you are
holding the wire with your right hand, so that your thumb shows a
conventional (positive) current; then the other fingers will circle the wire in
the direction of the magnetic field. (Giancoli: 2001: 137)
In 1269, de Maricourt conducted a study of magnets and observed
the existence of a pair of poles on magnetic objects. These poles are then
named with the north pole and south pole. If a similar pole such as the North
Pole with the North Pole is brought close, it will repel each other, and vice
versa if the North Pole is close to the South Pole, there will be an attraction.
Styles of repelling and mutual attraction resemble static electricity
phenomena, but a very important difference between the source of the
magnetic field and the electric field is that the north and south pole magnets
are inseparable and will always be in pairs, different from the electric forces
each of which can be separated, the positive pole magnet always appears in
pairs even if a material is cut in such a way that it will always appear a pair
of poles (Ishaq, 2007: 111-112).
The magnetic field, in physics, is a field formed by moving an
electric charge (electric current) which causes a force to emerge in other
moving electric charges. The quantum mechanical rotation of one particle
forms a magnetic field and the rotation is affected by itself as an electric
current; this is what causes the "permanent" ferromagnetic field. A magnetic

FIELD MAGNETIC AND INDUCTION MAGNETIC UTUT MUHAMMAD
field is a vector field: that is, it relates to each point in a vector space that
can change over time. The direction of this field is balanced with the
direction of the needle placed in the field (Tipler, 2010: 198)
Hans Oersted conducted an experiment to prove electricity and
magnetism could be one or better known as electromagnets, Oersted carried
a compass placed near the wire being fed electric current. The result turns
out to be a compass needle that always shows the north direction moving.
From the conclusion of the Oersted experiment, it was proved that the wire
flowed by the electric current can move the compass needle. So, electricity
can actually cause electromagnets, so an electromagnetic field arises.
(Anggraeni, 2008: 13-14)
Oersted's law is a law discovered by a physicist and chemist from
Denmark named Hans Christian Oersted (1777-1851). The relationship
between electrical and magnetic phenomena, wherein when the compass
needle is placed close to the wire which is going to turn will be explained in
this law. (Jewett, 2010: 451)
Magnetic fields are often interpreted as areas or spaces that are
affected by magnets. If the magnetic material is placed in an area or space
where there is already a magnetic field, the magnetic material will be
affected by a magnet. (Umar, 2008: 141).
There are three properties of magnetic materials, namely
paramagnetic, ferromagnetism, and diamagnetism. Paramagnetic is a trait
that has no magnetic properties at all. The magnetic material is composed
of atoms or ions which have a permanent dipole moment. Ferromagnetism
is a material that has strong magnetic properties. The ferromagnetism
material when irradiated by the magnetic field causes the magnetic field
strength in the material to be immense. Examples of ferromagnetism are
iron, cobalt, nickel, dysprosium, and gadolinium. Diamagnetism is
paramagnetic but has small magnetic properties. (Jati and Priyambodo,
2010: 94).
C. TOOLS AND MATERIALS

N
O
PICTURE
NAME OF
TOOLS AND
MATERIALS
NUMBER
1 Power Supply
1 Fruit
2
Digital
Multimeter
1 Fruit
3
50 Ohm
Resistor
1 Fruit
4 Switches
1 Fruit
5 1000 coil coil
1 Fruit
6
Coils 500
Twists
1 Fruit
7 Kompas
1 Fruit

8 Iron Core
1 Fruit
9
Connecting
Cable
5 Fruit
10
100 ohm
resistor
1 Fruit
D. WORK STEPS
Experiment I (50 Ohm Resistor)
NO IMAGE WORK STEP
1 Prepare tools and materials
2
From the power supply
connect the cable to the
resistor. 50 ohms
3
Make a series of electricity in
the magnetic field

4
Turn the selector on the
multimeter towards 10 mA
5
Place the compass in front of
the coil
6
Turn on the power supply, and
turn it at 12 V, and turn onthe
switch
7
Bring the coil close to 500
turns, and record the
deviation on the compass in
air and iron.
8
deviation results on the
compass in air and iron.
9
Bring the coil with 500 and
1000 ohms and add iron, and
there is a deviation in the air
and iron.
10
Replace with polarity on the
power supply

11
Record the results such as
currents on the multimeter,
deviation in the direction of
the compass needle
Experiment II (100 Ohm Resistor)
NO IMAGE WORK STEP
2
From the power supply
connect the cable to the
resistor. 100 ohms
3
Make a series of electricity in
the magnetic field
4
Turn the selector on the
multimeter towards 10 mA
5
Place the compass in front of
the coil

6
Turn on the power supply, and
turn it at 12 V, and turn on the
switch
7
deviation on the compass in
air and iron.
8
deviation results on the
compass in air and iron.
9
Bring the coil with 500 and
1000 ohms and add iron, and
there is a deviation in the air
and iron.
10
Replace with polarity on the
power supply
11
Record the results such as the
current on the multimeter, the
deviation in the direction of
the compass needle
E. EXPERIMENT DATA
Experiment I
Power Supply Voltage of 12V (DC)
Resistor 50 ohm

No
Electric
Current
(Ampere
)
Polarity of Coil / DeficitTwists of
A B Number of Core Type Angle
Dire
ction
1 0, 21
+ -
500
Air 110° BJ
2 0,21 Iron 120° SJ
3 0,15
1000
Air 90° BJ
4 0,15 Iron 110° SJ
5 -0,19
- +
500
Air 70° BJ
6 -0,19 Besi 80° BJ
7 -0.16
1000
Air 60° BJ
8 -0.16 Iron 70° BJ
DIRECTION FOR SAVINGS: Counter
● BJ =clockwise
● SJ = Clockwise
Experiment II
Power Supply Voltage of 12V (DC)
Resistor 100 ohms
No
Electric
Current
(Ampere
)
Polarity Coil Deviation / Deficit
A B
Number of
Winding
Core Type Angle
Dire
ction
1 0.10
+ -
500
Air 100° SJ
2 0.10 Iron 120° SJ
3 0.10
1000
Air 120° SJ
4 0,10 Besi 130° SJ
5 -0.08
- +
500
Air 50° BJ
6 -0.08 Iron 60° BJ
7 -0.05
1000
Air 60° BJ
8 -0.05 Iron 70° BJ
DIRECTION FOR SAVINGS:
● BJ = Counterclockwise
● SJ = Clockwise
F. BUSINESS SAN
In practicum about this magnetic field, the magnet experiment this
time is one of the objectives, which is to prove the Oersted experiment.

Oersted produces the theory that there is a relationship between magnetism
and electricity.
In this lab, an experiment was carried out using a 500-coil coil and
a 1000-coil coil, besides that it also used a different resistor that is equal to
50 ohms and 100 ohms. The voltage used in all of these magnetic
experiments is 12 volts.
Based on this magnetic practicum that has been done to know the
Hans Christian Oersted experiment. Oersted stated about a magnetic field
in which if there is a conductor that has an electric current it can produce a
magnetic field where if the compass needle is close to the coil which has an
electric current, the compass needle will deviate right or left. In this lab, the
practitioner uses a compass to find out how much the magnetic field has a
voltage of 12 volts on the power supply by looking at the deviation in the
compass needle and knowing the direction of the magnetic field caused by
the coil.
The first experiment was carried out with 50 ohms on a 500-coil coil,
the compass experienced a clockwise deviation. This proves that there is a
magnetic field when the polarity is carried out the value becomes negative
on the multimeter, but the current flow remains the same in the coil of 500
and 1000 turns. Polarity also affects deviations that occur in the compass.
The deviation becomes counterclockwise.
When during this practical activity using 500 and 1000 turns, it was
seen that the more turns the greater the deviation with the condition, not
polarity, but when carried out polarity on the coil of 500 windings the largest
flow occurred at -0.19 A on the multimeter. When the iron core is present,
the deviation is greater in the 1000 coil compared to the coil at 500 turns
both in air conditions and in iron conditions.
In the next experiment using a 100-ohm resistor. The current
strength is smaller than in the previous experiment with a smaller resistor
value. When the polarity is reversed the same thing happens with a
difference in the current value of the difference between 50 ohms and 100

ohms, so the resistor value also affects the current value on the multimeter,
so this happens when the resistor is 100 ohms and also influences the reverse
flow the presence or absence of the iron core also affects the angle on the
deviation on the compass, when you want to turn on the multimeter (the
power supply position is turned on and turned towards 12 volts and the
switch is on) do not put the compass in front of the coil pad, if we put the
compass in front of the coil shocked (spinning very fast like being hit by
vibrations), then when you want to turn on the current put the magnet far
away from the coil, then the magnet will not be surprised.
Based on the practicum that has been done, it is known that there is
an influence of the magnetic field around the current wire (the coil flowing),
the resistor value, polarity, and whether or not the iron core influences the
compass needle deviation used at the lab. The reverse polarity also changes
the current value to be negative on the multimeter both on the modified
resistor and the coil on the coil.
The results of the experimental data indicate that there may be data
that is not in accordance with the existing theory that the greater the number
of turns the greater the magnetic field produced. This happens because of
the error factors in the implementation that occurs when the practitioner
himself or other factors.
With the practicum, the practitioner can better understand that if the
compass is brought closer to the conductor which is flowing, there will be a
deviation in the compass angle. In addition, if the compass needle is brought
closer to the coil which has electricity flowing closer to the coil on the coil,
the greater the magnetic field and vice versa. This is due to the influence of
the electric current force on the pull force on the compass. In this magnetic
field practicum, the practitioner can walk smoothly in accordance with the
practicum as it should and run well with the guidance of Fatimah.
G. POST PRACTICUM TASKS
1. How do you know the size of the magnetic field in this experiment?
Answer:

we can know the magnitude of the magnetic field by looking at the
distance between the compass and the coil that has electricity, the closer
to the compass with the coil, the greater the magnetic field. The farther
the compass with the coil, the smaller the magnetic field, and seeing the
voltage given, the magnitude of the voltage, the greater the magnetic
field, and then by looking at the number of turns, the more turns on the
coil, the greater the magnetic field.
2. What is the effect of changing polarization?
Answer:
Changes in polarity cause the current to change to negative and the
angle of turn changes to anticlockwise, polarization affects the direction
of the magnetic field or the direction of the compass of the compass so
that the direction of the compass needle is counterclockwise.
3. What is the function of the compass in this experiment?
Answer:
Kompas functions as the direction of the magnetic field and the
magnitude of the magnetic field produced, the function of the compass
also from this experiment is to prove that when the current wire is
electrified there will be a magnetic field arising around the wire, this is
evidenced by deviating the compass needle.
4. Make 4 graphs (2 for activities 1 and 1 for activity 1) which illustrate
the results of the experiment above! Each chart consists of 3 different
variables!
Answer:
1. A. Experiment I
a. Polarity (+) (-)

b. Polarity (-) (+)
Experiment II
a. Polarity (+) (-)

b. Polarity (-) (+)
5. What are the benefits of finding this experiment!
Answer:
The application of the event that there is an electric current that can
cause the presence of a magnetic field, which is found in devices that
function to convert electrical energy into motion energy such as an
electric motor or measuring electricity. We can know whether or not the
magnetic field, can know the direction and angle of the compass, can

compare theory with practice, and know variables that affect the
magnetic field.
6. Determine the direction of the magnetic field in the following picture!
Answer:
1. Magnetic field comes out
2. Magnetic field enters
3. Magnetic field exits coil
4. Magnetic field enters the coil
5. Magnetic
6. field left Magnetic field left
H. CONCLUSION
Based on the practicum that has been done can be concluded that:
1. The existence of an electric current creates a magnetic field around it.
2. The direction of the compass needle deviation depends on polarity.
3. The location near the compass and coil will affect the deviation on the
compass.
4. The magnetic field is affected by electric current.
5. The size of the resistor, the presence or absence of an iron core, and
many turns affect the value of the deviation on the compass.
I. COMMENTS

a. Checking tools and materials are needed when practicing so that all
tools and materials used can function.
b. Must understand the circuit.
c. Sharing tasks so that time can be managed properly.
J. REFERENCES
Anggraeni, Neny. 2008. Faraday and Electricity. Jakarta: Elex Media
Komputindo.
Giancoli, Douglas C. 2001. Physics: Principles and Applications of the
Seventh Edition
Volume 1. Jakarta: Erlangga.
Seventh Edition
Ishaq, Mohammad.2007.Basic Physics Edition 2.Graduation of Science.
Yogyakarta.
Jati, Bambang ME, and Priyambodo, Tri Kuntoro. 2010. Basic Physics:
Electricity-Magnets- modern optics. Yogyakarta: ANDI.
Kamajaya. 2008. Physics. Bandung: Grafindo Media Pratama.
Serwey, Raymond A and Jewett, John W. Physics for Science and
Engineering Issue 6 Volume 2. Jakarta: Salemba
Tipler, Paul.2010. Physics for Science and Engineering Volume 1. Jakarta:
Erlangga
Umar, Efrizon. 2008. Smart Books on Physics. Jakarta: Media
Pusind2018/04/30
(https: //www.scribd.com.pdf// magnetic field)
K. ATTACHMENT

OFPRACTICUM REPORT
BASICBASIS II
"MAGNETIC INDUCTION"
COLLECTION DATE : 10th
of March 2018 M
PRACTICUM DATE : 04th
March March8 M
PRACTICUM TIME : 11.30-finish WIB
NAME : Utut Muhammad
NIM : 11170163000059
GROUP / KLOTER : Two / One
NAME :
1. Word Melania Z. Z (11170163000055)
CLASS : PHYSICAL EDUCATION 2B
BASIC PHYSICAL LABORATORY
PROGRAM STUDY OF PHYSICAL EDUCATION
FACULTY OF SCIENCE TARBIYAH AND COURSE

OF ISLAM NEGERI SYARIF HIDAYATULLAH UNIVERSITY OF
JAKARTA
2018
"MAGNETIC INDUCTION"
FINAL DUTY PRACTICUM PRACTICUM
A. OBJECTIVES
1. Analyze the relationship between magnetic fields and electric currents
2. Proving Michael Faraday's experiment
3. Analyzing factors that influence the emergence of induced electric
motions.
4. Understanding material about electromagnetic induction
B. BASIC THEORY
After Oersted showed in 1820 that an electric current could affect
the needle of a compass, Faraday drew the hypothesis that if current could
produce a magnetic field, then a magnetic field could produce an electric
current. Faraday's concept proves that magnetic fields are capable of
producing electric current (Hayt, 2006: 293).
The concept of electric force was first put forward by Michael
Faraday, who conducted a study to determine the factors that influence the
magnitude of the induced GL, he found that induction was very dependent
on time, namely the faster the occurrence of magnetic changes, the greater
the induced GGL. On the other hand, GGL is not proportional to the rate of
change in magnetic field B, but is proportional to the rate of change of
magnetic flux , which moves across a loop as wide as A, which is
mathematically magnetic through B through the hypothesis surface Σ with
its boundary is a wire loop. Because the wire loop can move, it is written as
Σ (t). Magnetic flux is defined by a surface integral:

𝛷 𝑏 = ∬𝐵 (𝑟, 𝑡). 𝐷𝐴
With dA is the surface area element of a moving surface, B is a
magnetic field, and B. dA is a dot vector multiplication. Magnetic flux
through a wire loop is directly proportional to the gari of the magnetic field
passing through the loop. (Griffiths, 1999: 301-303) Magnetism can be
obtained by induction. For example, iron rods, before the iron rod is
brought close to the nail, the iron cannot pull the nail, but when a magnet is
held near the iron, it can pull the nail. The symptom of iron magnetism is
called induction. (Anggraeni, 2008: 11)
Faraday formulates that changes in magnetic flux will cause Electric
Force Motion (GL). If the magnetic flux that enters the magnet increases, it
means that the magnet is brought close to the coil so that the current from
the induced GGL will pass through the magnetic field. GGL induction
occurs not because of magnetic fields or magnetic fluxes but because of
changes in magnetic flux (Ishaq, 2007: 144).
Electromagnetic induction is a symptom of the emergence of
electromotive force in a coil/conductor if there is a change in magnetic flux
in the conductor or when the conductor moves relatively across the magnetic
field. GGL Induction Induction electromotive force is the emergence of an
electric force in the coil which includes a number of magnetic field force
line fluxes when the number of fluxes of the force line is varied. In other
words, there will be an electric force in the coil when the coil is in a
magnetic field whose terrain is strong and changes with time. (Giancoli,
2014: 172-173)
Heinrich Friedrich Lenz states that emf induction always generates
a current whose magnetic field is the opposite of the origin of changes in
flux. (Kamajaya, 2008: 289)
Heinrich Friedrich Lenz devised a rule that is now known as Lenz's
law, to determine the direction of induced currents in a loop: An induced
current has such a direction that the magnetic field due to current counteracts
the change in magnetic flux (Halliday, 2010: 260).

The induced current in a circle is in the direction that creates a
magnetic field which opposes the change in magnetic flux through a closed
area by the circle. That is, induced currents tend to keep the original
magnetic flux changes through loops. (Raymond A. Serway, 2010: 321) The
application of Faraday's Law is Ground Fault Interrupter (GFI) as a
tool that protects users of electrical devices from electric shocks. As for the
sound of the electric guitar page. Coils on the guitar frame called pickup
rangkka lay near the vibrating guitar rays, which are made of metal that can
be magnetized. The magnet inside the coil that magnetizes some of the
strings closest to the coil. (Fredick, 1988)
C. TOOLS AND MATERIALS
N
O
PICTURES
NAME OF
TOOLS AND
MATERIALS
NUMBER
1
Digital
Multimeter
1 Fruit
2
Alnico
Magnet
1 Fruit
3 1000 coil coil
1 Fruit
4
Coils 500
Twists
1 Fruit

5
Connecting
Cable
5
D. Pieces WORK STEPS
NO IMAGES WORK STEP
2
Determine magnetic poles
using compass
3
Make electrical circuit on
magnetic induction
4
Insert the rod at the magnetic
pole into the coiledquickly and
slowly
5
Insert the rod at the magnetic
north pole into the coiled coil
quickly and slowly
6
Measure the current
contained in the multimeter.

7
Repeat with different coils on
coils 1000 and 500 turns
8
Record the amount of current
in a magnet when it is released
and inserted slowly and
quickly.
E. DATA EXPERIMENT
Experiment I
1. North Pole Magnet
Coil
Movement of
Magnet into
Electr
ic
Curre
nt
(mA)
Movement of
Magnets
Outside
Electr
ic
Curre
nt
(mA)
500
Slow 0.14 Slow -0.11
Fast 0.45 Fast -0.32
1000
Slow 0.15 Slow -0.12
Fast 0.37 Fast -0.25
Experiment II
2. South Pole Magnet
Coils
Movement of
Magnet into
Electr
ic
Curre
nt
(mA)
Magnet
Movement
Outside
Electr
ic
Curre
nt
(mA)
500
Slow -0.25 Slow 0.24
Fast -0, 37 Fast 0.73
1000
Slow -0.22 Slow 0.36
Fast -2.11 Fast 1.43
F. DISCUSSION

In this electromagnetic induction practice, this time aims to prove
the experiments conducted by Michael Faraday in this practice used two
types of coils namely 500 and 1000 turns. The experiment was carried out
when the magnet was inserted from the magnetic north pole and when the
magnet produced from the north and when the magnet was inserted from
the south, then the magnetic velocity when entering the coil was also one of
the variables tested in this magnetic induction lab. To determine the north
and south poles of a magnet you can use a compass.
Based on experiments that have been carried out, it is magnetic
induction with the aim of proving the Faraday Induction law by using a
money magnet driven towards the hole to be coiled slowly or quickly.
Magnetic induction is a symptom of the occurrence of electric current in a
conductor due to changes in the magnetic field around the conductive wire.
In this experiment that was discovered by Michael Faraday which originated
from his curiosity with magnetic induction can produce electric current and
consequently was able to answer his idea by conducting experiments on
magnetic field induction.
In the initial experiment, using the North pole on the magnet, data
obtained on the 1000 coil has a small current strength, and when moved
quickly because of changes in magnetic flux that quickly make the measured
current become smaller compared to if it is moved slowly.
From the data listed on the data analysis, it can be seen that the faster
the movement is passed through the coil hole, the flow that is flowed is slow,
besides the more turns, the current produced is also slow, but there is a fast
at the south pole with coil 1000 turns, so that between coils or windings are
directly proportional to the current produced. A magnet that is moved in and
out of the coil can produce an electric current in the coil. In this experiment,
the participant did not use a galvanometer but still using a digital
multimeter. This multimeter is used to know whether or not there is an
electric current flowing in the coil, when a magnet is moved in or out on the
coil, this multimeter displays numbers on the multimeter screen. The

appearance of the numbers on the multimeter screen shows that the magnet
used and moved in and out on the coil has an electric force. This electric
current can occur if the ends of the coil are called induction electric motions.
Electric current only arises when the magnet moves if the magnet is
stationary inside the coil so that there is no electric current at the end of the
coil.
Subsequent experiments are the same as with the first experiment,
but the difference is only at the pole, this experiment uses the south pole on
the magnet, this proves that much less winding affects with more windings
then the current strength will be greater. When driven from the direction of
the north and south poles the value is the same and does not affect, what
affects it is the slow speed of the magnet when entering and exiting the coil.
Based on the practicum shown that if the magnetic north pole is
moved closer to the coil then the number that appears on the multimeter
screen is a positive number and if the north pole away from the coil, then
the number that appears on the multimeter screen is a negative number. The
appearance of the numbers on the multimeter screen shows that at both ends
of the coil there is an electric current. The event of an electric current arises
like that of electromagnetic induction. As for the mistakes that exist in the
practitioner when doing the lab occurs when entering a magnet and
removing a magnet that is too fast and slow, then when looking at the
numbers on the multimeter, in this magnetic induction lab the practitioner
can do it smoothly with the guidance of Fatimah.
G. POST PRACTICUM TASKS
1. Make 2 connecting graphs between the number of turns to the electric
current!
Answer:
a. Experiment I (the North Pole on Magnet)

b. Experiment II (the South Pole on Magnet)
2. Write down the factors that affect the size of the electric current!
Answer:
Factors that affect the size of the electric current, namely the number
of turns, the voltage applied to the coil and the time and area of
conductivity, then the magnitude of the resistance, the amount of
voltage, and the number of turns, where the coil turns to produce current
the more, and the magnetic movement when entering and exiting, fast
movement will also produce a large current value. The emergence of

electric currents in electromagnetic induction is due to changes in the
magnetic field so that when we do not have a change in the magnetic
field there will be no electric current that occurs.
3. Mention the application of electromagnetic induction!
Answer:
● In a generator tool: a tool used to convert kinetic energy into
electrical energy.
● Transformer: a device used to enlarge up to reduce the voltage
similar to electromagnetic induction.
● Dynamo AC / DC: a relatively small generator usually found on
a bicycle.
● Electromagnetic Induction events are also found in the
transformer, which is a device that serves to increase and
increase the AC voltage where there is a primary coil and a
secondary coil.
H. CONCLUSION
Based on the practicum that has been done, it can be concluded that:
1. Electromagnetic induction creates an electric current due to changes in
magnetic flux.
2. The number of turns and fast or slow magnetic induction and moving
magnetic fields affect the induced electric motion.
3. Currents that occur in induced electromotive forces and can be induced
by magnetic fields.
4. Factors that affect induction electric motion are time, number of turns,
area of windings, magnetic poles, which are brought close to the coil.
I. COMMENTS
1. Required division of tasks so that all experimental data can be obtained
during the lab.
2. Accuracy is needed when collecting data so that the data obtained is
valid.

3. Keep away the materials around the practicum table which can affect
the measurement or influence of changes in the magnetic field and the
electric current to be measured.
J. REFERENCES
Anggraeni, Neny. 2008. Faraday and Electricity. Jakarta: Elex Media
Komputindo.
Frederick E. Thinklien. 1988. Modern Physic For Teachers. Edition, Holt.
Renehart and Winstans Austin. The USA.
Seventh Edition
Griffiths, David J. (1999). Introduction to Electrodynamics (Third edition).
Upper Saddle River NJ: Prentice Hall. page 301-303
Halliday, David. 2010. Seventh Edition Basic Physics Volume 2. Jakarta:
Erlangga Publisher.
H. Hayt, Jr. William. Seventh Edition Electromagnetics. Jakarta: Erlangga
Ishaq, Mohammad.2007.Basic Physics Edition 2.Graduation of Science.
Yogyakarta.
Kamajaya. 2008. Physics. Bandung: Grafindo Media Pratama.
Serwey, Raymond A and Jewett, John W. Physics for Science and
Engineering Issue 6 Volume 2. Jakarta: Salemba
K. APPENDIX

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