NCTI Installer
Technician 100%
SOLUTION 2023//2024
20 milliamperes is the same as ________. (Remember, 1 milliampere = 0.001 ampere.)
- ANSWER 0.02 amperes
The orbital shell that has a maximum electron capacity of 18 electrons is the
___________ shell. - ANSWER Third
A semiconductor mate...
NCTI Installer
Technician 100%
SOLUTION 2023//2024
20 milliamperes is the same as ________. (Remember, 1 milliampere = 0.001 ampere.)
- ANSWER 0.02 amperes
The orbital shell that has a maximum electron capacity of 18 electrons is the
___________ shell. - ANSWER Third
A semiconductor material - ANSWER Has four valence electrons.
The major factor for determining whether a particular element is a conductor, a
semiconductor, or an insulator is - ANSWER The number of electrons in the valence
shell.
Elements that are called conductors - ANSWER Have very few valence electrons.
The term voltage normally refers to - ANSWER The measurement of the difference in
potential between two charges.
The ampere - ANSWER Indicates how many coulombs pass a given point during 1
second.
Electric current is actually produced by - ANSWER The transfer of energy from valence
electron to valence electron as a result of applied charges.
What prevents the electrons that orbit an atom's nucleus at high speeds from breaking
away from the nucleus due to centrifugal force? - ANSWER The attraction between the
positive nucleus and the negative electron.
, 5 kilovolts is the same as - ANSWER 5 kV.
To create an electromagnet, - ANSWER Wrap a coil of insulated wire around an iron
bar and pass an electric current through the wire.
Magnetism - ANSWER Was discovered when the Greeks noticed that magnetite
always aligned itself in a north and south direction.
In a magnetic material, - ANSWER Where only some of the magnetic domains are
pointing in the same direction, the magnetic field is weaker.
The strength of an electromagnetic field is - ANSWER Determined by the magnitude of
the magnetomotive force (mmf).
The magnetic field - ANSWER Created by a straight piece of wire is weaker than that
created by forming loops of wire.
Flux lines - ANSWER Always curve around through the body of the magnet to form
complete loops.
Magnetic poles that are ___________ will ____________ each other when those poles
are near each other. - ANSWER Alike, repel
A permanent-magnet loudspeaker - ANSWER Has a cone that moves back and forth in
relation to the varying current of the original sound.
The left-hand rule for electromagnetism in a wire states that - ANSWER If you wrap the
fingers of your left hand around the wire with your thumb pointing in the direction of the
current flow, your fingers will be wrapped in the direction of the magnetic field.
The recording head of a tape recorder is actually a(an) - ANSWER Electromagnet.
(-25) + (42) + (-62) + (20) = - ANSWER -25
(-17) - (-34) = - ANSWER 17
(17) x (-19) = - ANSWER -323
-49/-7 = - ANSWER 7
(20) / (-4) + (-2) x (-10) - (-2) x (7) = - ANSWER 29
3 6/9 + 6 1/3 + 9 5/9 = - ANSWER 19 5/9
4/7 x 9 4/11 = - ANSWER 5 27/77
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