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Electronics ETA Certification Practice Exam test
1.
The
"triboelectric
effect"
causes
what
kind
of
electricity?:
Static
2.
The law of static electrical charges states:: like charges repel
3. Minu
te particles that make up all possible elements and still retain the
unique
chemical
characteristics
of
the
element
are
called
.:
Atoms
4. A molecule is the smallest particle of matter that can exist by itself.
(1): True
(1)
5.
A basic atom must contain what two types of subatomic particles?: Electron
and proton
6.
An electron has
.:
a Negative charge
7.
What
two
types
of
energy
are
used
throughout
electronics?:
Kinetic and
potential
8.
Electrical direct current flowing in a wire produces a magnetic field:: at
right
angles
to
current
flow
9.
A material is magnetized when the:: domains are in
alignment
10.
A material that can be magnetized easily falls into this category::
Ferromagnetic
11. Invisible lines of force that surround a magnet are called
.:
magnetic
flux
lines
12. T
he pole of a magnet from which flux leaves is called the .-
: north
13.
force produces magnetic flux.:
Magnetomotive
14. What class of fire extinguisher is used on an oil fire?: B
15. It is dangerous to use wooden handled tools around high
