ETA Certified Electronics Technician
(CET) Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. Which statement best describes the role of the ETA International
Certified Electronics Technician (CET) credential in an electronics
technician’s professional development, particularly when
distinguishing the foundational Associate CET level from the full CET
pathway?
A. The CET credential is exclusively an academic degree replacement and
does not assess practical electronics knowledge.
B. The Associate CET establishes foundational electronics competence, while
full CET certification requires the Associate-level examination plus an
appropriate Journeyman-level specialty examination.
C. The CET credential is limited to telecommunications technicians and
excludes general electronics.
,D. The CET credential requires an engineering degree before any
examination can be attempted.
B. The Associate CET establishes foundational electronics competence,
while full CET certification requires the Associate-level examination plus an
appropriate Journeyman-level specialty examination.
The Associate examination establishes the basic electronics foundation,
while the full CET pathway adds a Journeyman specialty such as consumer,
industrial, communications, computer, medical, or radar electronics.
2. A technician is troubleshooting a DC circuit containing a 24-V source
and a 6-Ω load resistor. Assuming the source and resistor are ideal,
what current should the technician expect to measure through the
resistor?
A. 0.25 A
B. 2 A
C. 4 A
D. 144 A
C. 4 A
Ohm’s law states that current equals voltage divided by resistance, so I =
24 V ÷ 6 Ω = 4 A.
, 3. A technician connects two resistors of 100 Ω and 200 Ω in series across
a 30-V DC supply. What total resistance and circuit current should be
expected?
A. 50 Ω and 0.60 A
B. 300 Ω and 0.10 A
C. 300 Ω and 10 A
D. 20,000 Ω and 0.0015 A
B. 300 Ω and 0.10 A
Series resistances add directly, giving 300 Ω, and Ohm’s law gives 30 V ÷
300 Ω = 0.10 A.
4. Three resistors rated 6 Ω, 3 Ω, and 2 Ω are connected in parallel. What
is the equivalent resistance of the network?
A. 11 Ω
B. 6 Ω
C. 1 Ω
D. 0.5 Ω
C. 1 Ω
For parallel resistors, the reciprocal resistances add; 1/6 + 1/3 + 1/2 = 1, so
the equivalent resistance is 1 Ω.
, 5. A 12-V source supplies a circuit drawing 2.5 A. What electrical power is
being delivered to the circuit under steady-state conditions?
A. 4.8 W
B. 14.5 W
C. 30 W
D. 60 W
C. 30 W
Electrical power is P = VI, so 12 V × 2.5 A = 30 W.
6. A technician measures a resistor with the power removed from the
circuit and obtains a resistance substantially higher than the marked
value. Which condition should be considered first?
A. The resistor may be open or disconnected
B. The resistor is definitely shorted
C. The power supply frequency is too high
D. The capacitor has excessive capacitance
A. The resistor may be open or disconnected
An open resistor or poor connection produces an abnormally high
resistance measurement when tested out of circuit.
(CET) Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. Which statement best describes the role of the ETA International
Certified Electronics Technician (CET) credential in an electronics
technician’s professional development, particularly when
distinguishing the foundational Associate CET level from the full CET
pathway?
A. The CET credential is exclusively an academic degree replacement and
does not assess practical electronics knowledge.
B. The Associate CET establishes foundational electronics competence, while
full CET certification requires the Associate-level examination plus an
appropriate Journeyman-level specialty examination.
C. The CET credential is limited to telecommunications technicians and
excludes general electronics.
,D. The CET credential requires an engineering degree before any
examination can be attempted.
B. The Associate CET establishes foundational electronics competence,
while full CET certification requires the Associate-level examination plus an
appropriate Journeyman-level specialty examination.
The Associate examination establishes the basic electronics foundation,
while the full CET pathway adds a Journeyman specialty such as consumer,
industrial, communications, computer, medical, or radar electronics.
2. A technician is troubleshooting a DC circuit containing a 24-V source
and a 6-Ω load resistor. Assuming the source and resistor are ideal,
what current should the technician expect to measure through the
resistor?
A. 0.25 A
B. 2 A
C. 4 A
D. 144 A
C. 4 A
Ohm’s law states that current equals voltage divided by resistance, so I =
24 V ÷ 6 Ω = 4 A.
, 3. A technician connects two resistors of 100 Ω and 200 Ω in series across
a 30-V DC supply. What total resistance and circuit current should be
expected?
A. 50 Ω and 0.60 A
B. 300 Ω and 0.10 A
C. 300 Ω and 10 A
D. 20,000 Ω and 0.0015 A
B. 300 Ω and 0.10 A
Series resistances add directly, giving 300 Ω, and Ohm’s law gives 30 V ÷
300 Ω = 0.10 A.
4. Three resistors rated 6 Ω, 3 Ω, and 2 Ω are connected in parallel. What
is the equivalent resistance of the network?
A. 11 Ω
B. 6 Ω
C. 1 Ω
D. 0.5 Ω
C. 1 Ω
For parallel resistors, the reciprocal resistances add; 1/6 + 1/3 + 1/2 = 1, so
the equivalent resistance is 1 Ω.
, 5. A 12-V source supplies a circuit drawing 2.5 A. What electrical power is
being delivered to the circuit under steady-state conditions?
A. 4.8 W
B. 14.5 W
C. 30 W
D. 60 W
C. 30 W
Electrical power is P = VI, so 12 V × 2.5 A = 30 W.
6. A technician measures a resistor with the power removed from the
circuit and obtains a resistance substantially higher than the marked
value. Which condition should be considered first?
A. The resistor may be open or disconnected
B. The resistor is definitely shorted
C. The power supply frequency is too high
D. The capacitor has excessive capacitance
A. The resistor may be open or disconnected
An open resistor or poor connection produces an abnormally high
resistance measurement when tested out of circuit.
