2. What is Electronics?
the branch of physics and technology
concerned with the design of circuits
using transistors and microchips, and
with the behavior and movement of
electrons in a semiconductor,
conductor, vacuum, or gas.
6. SCREWDRIVER
Screwdrivers are hand tools
specifically designed to insert and
tighten, or to loosen and remove
screws.
A screwdriver comprises a head
or tip, which engages with a screw,
a mechanism to apply force by
rotating the tip, and some way to
position and support the
screwdriver, the tip of which is
shaped in to fit a particular type of
screw.
8. PHILLIPS
SCREWDRIVER
It is used to drive or
fasten positive slotted
screws. It is a
screwdriver that could
take greater torque and
could provide tighter
fastenings.
10. SHORT QUIZ #1
Directions: Choose the letter of the correct answer.
1. What do you call a tool used to tighten or loosen slotted screws?
a. Jewelry Screwdriver c. Phillips Screwdriver
b. Screwdriver d. Slotted Screwdriver
2. What type of screwdriver is composed of small slotted and Phillips screwdrivers?
a. Jewelry Screwdriver c. Phillips Screwdriver
b. Screwdriver d. Slotted Screwdriver
3. It is a screwdriver that could take greater torque and could provide tighter
fastenings.
a. Jewelry Screwdriver c. Phillips Screwdriver
b. Screwdriver d. Slotted Screwdriver
4. What hand tool is designed to insert and tighten, or to loosen and remove screws.
a. Jewelry Screwdriver c. Phillips Screwdriver
b. Screwdriver d. Slotted Screwdriver
5. What is a handheld device that aids in accomplishing a task?
a. Equipment c. Paraphernalia
b. Device d. Tools
11.
12. SOLDERING
IRON
is a device for applying heat to
melt solder in attaching two
metal parts. A soldering iron is
composed of a heated metal tip
and an insulated handle.
For electrical work, wires are
usually soldered to printed circuit
boards, other wires, or small
terminals. A low-power iron (20-30
Watts) is suitable for this
work.
13. SOLDERING
TOOL STAND
is a place where the
soldering iron is placed during
usage. This will keep the
soldering iron away from
flammable materials.
The stand often comes with
a sponge used in cleaning the
tip of the
soldering iron.
14. DESOLDERING
TOOL
is used in removing
soldered wires and
components on printed
circuit boards for
troubleshooting and repair
purposes.
15. SHORT QUIZ #2 Directions: Choose the letter of the correct answer.
1. What do you call to a device used for applying heat to melt solder in attaching two
metal parts?
a. Desoldering Tool c. Soldering Iron
b. Soldering Tools d. Soldering Iron Stand
2. When using a soldering iron, where is it placed?
a. Desoldering Tool c. Soldering Iron
b. Soldering Tools d. Soldering Iron Stand
3. It is used in removing soldered wires and components on printed circuit boards for
troubleshooting and repair purposes.
a. Desoldering Tool c. Soldering Iron
b. Soldering Tools d. Soldering Iron Stand
4. Which equipment does NOT belong to the group?
a. Desoldering Tool c. Soldering Iron
b. Screwdriver d. Soldering Iron Stand
5. What is a handheld device that aids in accomplishing a task?
a. Equipment c. Paraphernalia
b. Device d. Tools
16.
17. LONG NOSE is used for
holding, bending,
and stretching the
lead of electronic
component or
connecting wires.
18. SIDE CUTTER is a wire-cutting
pliers, though they
are not used to
grab or turn
anything, but are
used to cut wires.
19. WIRE STRIPPER is a pair of opposing
blades much like scissors
or wire cutters.
The addition of a center
notch makes it easier to
cut the insulation without
cutting the wire.
20. SHORT QUIZ #3 Directions: Choose the letter of the correct answer.
1. Mike wants to cut and peel the computer component's cable wires. Which instrument
should he use?
a. Anti-static mat c. Philips head screwdriver
b. Hex driver d. Wire cutter
2. Which of the following tools has long, thin jaws that are used to grasp small or thin
objects?
a. Big Pliers c. Needle Nose Pliers
b. Long Nose Pliers d. Small Pliers
3. What tool are not used to grab or turn anything, but are used to cut wires?
a. Long Nose c. Short Nose
b. Side Cutter d. Wire Cutter
4. Which of the following is a pair of opposing blades much like scissors or wire
cutters?
a. Long Nose c. Short Nose
b. Side Cutter d. Wire Stripper
5. What is a handheld device that aids in accomplishing a task?
a. Equipment c. Paraphernalia
b. Device d. Tools
21.
22. 12V MINI-DRILL is used to bore or
drill holes in the
printed circuit board
(PCB) with sizes from
1/32)” – 1/16”.
(6"x9”)
23. PORTABLE
ELECTRIC DRILL
is used for boring
hole(s) in plastic or
metal chassis with
the used of drill bits
having sizes from
1/6” to
approximately
1/4”.
24. METAL FILES These are hand tools
having a series of sharp,
parallel ridges or teeth.
Most files have a narrow,
pointed tang at one end to
which a handle can be fitted.
25. FLAT FILE is parallel in width
and tapered in
thickness; they are
used for flat
surfaces and
edges.
26. HALF ROUND
FILE
is tapered in width
and thickness, coming
to a point, and is
narrower than a
standard half round
and used for filing
inside of rings.
27. ROUND FILE is also called rat-tail
file which is gradually
tapered and used for
many tasks that require
a round tool, such as
enlarging round
holes or cutting a
scalloped edge.
28.
29. UTILITY KNIFE is a common tool
used in cutting
various trades and
crafts for a variety
of purposes.
30. HACKSAW is used for cutting metals.
Some have pistol grips which
keep the
hacksaw firm and easy to
grip.
The small hand-held
hacksaws consist of a
metal arch with a handle
that fits around a narrow,
rigid blade.
31.
32. MAGNIFYING
GLASS
is a convex lens which is used to
produce a magnified image of an
object. The lens is usually mounted
on a frame with a handle.
Roger Bacon is the original
inventor of the magnifying glass. A
magnifying glass works by creating
a magnified virtual image of an
object behind the lens. Some
magnifying glasses are foldable
with built-in light.
33. PAINT BRUSH
made of bristles
set in handle, use
for cleaning dirty
parts of a circuit or
an object.
34. SHORT QUIZ #4 Directions: Choose the letter of the correct answer.
1. What hand tools have a series of sharp, parallel ridges or teeth?
a. Flat File c. Metal Files
b. Half Round File d. Round File
2. Which of the following tools is parallel in width and tapered in thickness; they are
used for flat surfaces and edges?
a. Flat File c. Metal Files
b. Half Round File d. Round File
3. What tool is tapered in width and thickness, coming to a point, and is narrower than
a standard half round and used for filing inside of rings?
a. Flat File c. Metal Files
b. Half Round File d. Round File
4. Which of the following is used for many tasks that require a round tool, such as
enlarging round holes or cutting a scalloped edge
a. Flat File c. Metal Files
b. Half Round File d. Round File
5. What is a handheld device that aids in accomplishing a task?
a. Equipment c. Paraphernalia
b. Device d. Tools
36. Volt-Ohm-
Milliammeter
It is an equipment that
combines three functions:
as a VOLTMETER that
measures both ac and dc
voltages; an OHMMETER
that measures resistance;
and MILLIAMMETER that
measures small amount of
dc current.
37. In a circuit,
• CURRENT is the flow of electrons.
• VOLTAGE is the electrical potential
difference between two points.
• RESISTANCE is something that resists the
flow of electrons.
Current is measured in Amperes or A
Voltage is measured in Volts or V
Resistance is measured in Ohms or Ω
38. Volt-Ohm-
Milliammeter
As safety precautions in the maintenance
of this instrument, the following should be
observed:
• Always rest the function switch at
250V AC if an OFF position is not
available in the instrument.
• For current and voltage measurements,
always set the function switch in the
correct setting which is a little higher
than the expected current or voltage
present in the circuit.
• Place the instrument in a cool dry place,
away from any magnetic devices, and
free from vibrations.
39.
40. Oscilloscope An oscilloscope (commonly
abbreviated CRO, for cathode-ray
oscilloscope, or scope) is a piece
of electronic test equipment that
allows signal voltages to be
viewed, usually as a two-
dimensional graph of one or more
electrical potential differences
(vertical axis) plotted as a
function of time or of some other
voltage (horizontal axis).
42. PARTS OF A CIRCUIT
Use the elements to create a diagram of a series and parallel circuit.
PARALLEL CIRCUIT
SERIES CIRCUIT
43. INSULATOR / CONDUCTOR ITEM INSULATOR / CONDUCTOR ITEM
keys drinking glass
aluminum foil styrofoam
wooden spoon silverware
brass doorknob rubber band
plastic container copper wire
CONDUCTORS & INSULATORS
Complete the table by indicating if the item is an insulator or conductor
44. N
S
MAGNETIC
FIELD N
S N S
N
S N
S
Sketch the magnetic lines of force that would
be produced if the magnets below were
sprinkled with iron filings.
46. ELECTRIC
DISCHARGE
Number the steps in order to describe what
happens when you shuffle your feet across
a carpeted room, reach out to touch a
metal doorknob, and get shocked.
The doorknob's surface becomes
positively charged.
The extra electrons on your hand repel
the electrons on the doorknob.
The electric discharge occurs when
electrons are drawn across the field.
The friction of your shoes rubs electrons
off the carpet.
When you touch the doorknob, an electric
field forms between it and your hand.
Electrons are transferred and spread
across the surface of your skin.
47. amount of charge that moves past a certain point each second
continuous flow of electric charge
SI unit of measurement for current
material that does not transfer electric charge well
potential difference that causes charges to move in a circuit
measure of material's electrical resistance
electric charges flow in alternating directions, repeatedly
material that permits an electric current to flow easily
electric charges move in one direction
CURRENT ELECTRICITY
Match the terms to the correct descriptions.
ampere
conductors
current electricity
direct current (DC)
alternating current (AC)
electric current
resistance
insulators
voltage
48. OHM'S LAW
Use the formula for finding voltage
to calculate the problems below.
A circuit has a resistance of 20 ohms and a current of 5
amperes flowing through it. What is the voltage across the
circuit?
V = 5 A * 20 Ω = 100 V
Answer: The voltage across the circuit is 100 volts.
A light bulb has a resistance of 50 ohms and is connected to
a battery with a voltage of 12 volts. What is the current
flowing through the light bulb?
I = 12 V / 50 Ω = 0.24 A
Answer: The current flowing through the light bulb is 0.24 amperes.
A circuit has a voltage of 24 volts and a resistance of 6
ohms. What is the current flowing through the circuit?
I = 24 V / 6 Ω = 4 A
Answer: The current flowing through the circuit is 4 amperes.
49. energy source
load
switch
wire
1. A(n) ( energy source / load ) pushes electric charges through a closed circuit.
2. The ( switch / wire ) connects the energy source to the load.
3. A(n) ( closed / open ) circuit has a break in it.
4. Electric circuits deliver energy to a(n) ( energy source / load ).
5. A(n) ( switch / wire ) opens and closes a circuit.
PARTS OF A CIRCUIT
Circle the current vocabulary word that makes the statement true, and label the diagram.
A
B
C
D
A
B
C
D
50. ELECTROMAGNET Answer each question below in
the space provided.
What is an electromagnet and how is it different from a permanent magnet?
How can you increase the strength of an electromagnet, and what factors affect its strength?
What are some practical applications of electromagnets in our daily lives,
and how do they work?
An electromagnet is a type of magnet that is created by passing an electric current through a wire coil.
Unlike a permanent magnet, an electromagnet can be turned on and off by controlling the electric current.
The strength of an electromagnet can be increased by changing the number of turns,
current, or core material. Coil size, distance, and temperature also affect the strength.
Answers will vary but may include: electric motors, doorbells, MRI machines,
scrapyard cranes...
51. INSULATOR / CONDUCTOR ITEM INSULATOR / CONDUCTOR ITEM
conductor keys insulator drinking glass
conductor aluminum foil insulator styrofoam
insulator wooden spoon conductor silverware
conductor brass doorknob insulator rubber band
insulator plastic container conductor copper wire
CONDUCTORS & INSULATORS
Complete the table by indicating if the item is an insulator or conductor
52. N
S
MAGNETIC
FIELD N
S N S
Sketch the magnetic lines of force that would
be produced if the magnets below were
sprinkled with iron filings.
N
S
N
S
53. 4
3
6
1
5
2
ELECTRIC
DISCHARGE
Number the steps in order to describe what
happens when you shuffle your feet across
a carpeted room, reach out to touch a
metal doorknob, and get shocked.
The doorknob's surface becomes
positively charged.
The extra electrons on your hand repel
the electrons on the doorknob.
The electric discharge occurs when
electrons are drawn across the field.
The friction of your shoes rubs electrons
off the carpet.
When you touch the doorknob, an electric
field forms between it and your hand.
Electrons are transferred and spread
across the surface of your skin.
