ETA (Electronics Technicians Association) CERTIFICATION FINAL EXAM 200
COMPLETE QUESTIONS WITH ACCURATE DETAILED ANSWERS AND
RATIONALES 2025-2026 Edition | Based on the ETA Certification Exam Content
Blueprint || Latest Update || Guaranteed Pass
SECTION 1: BASIC ELECTRICAL THEORY (Questions 1–40)
1. In a parallel circuit, total resistance:
A) Is less than the resistance of any branch
B) Is equal to the sum of all branches
C) Is infinite if one branch is open
D) Is greater than the resistance of any branch
Answer: A) Is less than the resistance of any branch
Rationale: In a parallel circuit, the total resistance (RT) is always less than the
smallest individual branch resistance. This is because parallel paths provide
more ways for current to flow, effectively reducing the overall opposition to
current. The formula for two parallel resistors is RT = (R1 × R2) / (R1 + R2), and
for multiple resistors, 1/RT = 1/R1 + 1/R2 + ... + 1/Rn.
,2. Which symbol is used for ohms of resistance?
A) Ω
B) V
C) A
D) W
Answer: A) Ω
Rationale: The Greek letter omega (Ω) is the standard symbol for the ohm, the
unit of electrical resistance. V represents volts (voltage), A represents
amperes (current), and W represents watts (power).
3. A unit of energy is the:
A) Joule
B) Watt
C) Ampere
D) Volt
Answer: A) Joule
,Rationale: The joule (J) is the SI unit of energy. One joule is the energy
transferred when one ampere of current flows through a resistance of one
ohm for one second. The watt is a unit of power (energy per unit time), the
ampere is current, and the volt is potential difference.
4. Minute particles that make up all possible elements and still retain the
unique chemical characteristics of the element are called:
A) Atoms
B) Molecules
C) Electrons
D) Protons
Answer: A) Atoms
Rationale: Atoms are the smallest units of an element that retain the chemical
properties of that element. They consist of a nucleus (protons and neutrons)
surrounded by electrons. Molecules are groups of atoms bonded together.
Electrons and protons are subatomic particles.
5. A component whose value is measured in microfarads is a:
A) Capacitor
B) Resistor
C) Inductor
D) Transformer
Answer: A) Capacitor
, Rationale: Capacitance is measured in farads (F), and microfarads (µF) are
commonly used for small capacitors. Resistors are measured in ohms,
inductors in henries, and transformers have turns ratios.
6. Kirchhoff's Voltage Law (KVL) states that the total voltage around a closed
loop must be zero.
A) True
B) False
Answer: A) True
Rationale: Kirchhoff's Voltage Law states that the algebraic sum of all voltages
around any closed loop in a circuit is zero. This is a consequence of
conservation of energy. The sum of voltage rises equals the sum of voltage
drops.
7. The pole of the magnet from which the flux leaves is called the:
A) North pole
B) South pole
C) East pole
D) West pole
Answer: A) North pole
COMPLETE QUESTIONS WITH ACCURATE DETAILED ANSWERS AND
RATIONALES 2025-2026 Edition | Based on the ETA Certification Exam Content
Blueprint || Latest Update || Guaranteed Pass
SECTION 1: BASIC ELECTRICAL THEORY (Questions 1–40)
1. In a parallel circuit, total resistance:
A) Is less than the resistance of any branch
B) Is equal to the sum of all branches
C) Is infinite if one branch is open
D) Is greater than the resistance of any branch
Answer: A) Is less than the resistance of any branch
Rationale: In a parallel circuit, the total resistance (RT) is always less than the
smallest individual branch resistance. This is because parallel paths provide
more ways for current to flow, effectively reducing the overall opposition to
current. The formula for two parallel resistors is RT = (R1 × R2) / (R1 + R2), and
for multiple resistors, 1/RT = 1/R1 + 1/R2 + ... + 1/Rn.
,2. Which symbol is used for ohms of resistance?
A) Ω
B) V
C) A
D) W
Answer: A) Ω
Rationale: The Greek letter omega (Ω) is the standard symbol for the ohm, the
unit of electrical resistance. V represents volts (voltage), A represents
amperes (current), and W represents watts (power).
3. A unit of energy is the:
A) Joule
B) Watt
C) Ampere
D) Volt
Answer: A) Joule
,Rationale: The joule (J) is the SI unit of energy. One joule is the energy
transferred when one ampere of current flows through a resistance of one
ohm for one second. The watt is a unit of power (energy per unit time), the
ampere is current, and the volt is potential difference.
4. Minute particles that make up all possible elements and still retain the
unique chemical characteristics of the element are called:
A) Atoms
B) Molecules
C) Electrons
D) Protons
Answer: A) Atoms
Rationale: Atoms are the smallest units of an element that retain the chemical
properties of that element. They consist of a nucleus (protons and neutrons)
surrounded by electrons. Molecules are groups of atoms bonded together.
Electrons and protons are subatomic particles.
5. A component whose value is measured in microfarads is a:
A) Capacitor
B) Resistor
C) Inductor
D) Transformer
Answer: A) Capacitor
, Rationale: Capacitance is measured in farads (F), and microfarads (µF) are
commonly used for small capacitors. Resistors are measured in ohms,
inductors in henries, and transformers have turns ratios.
6. Kirchhoff's Voltage Law (KVL) states that the total voltage around a closed
loop must be zero.
A) True
B) False
Answer: A) True
Rationale: Kirchhoff's Voltage Law states that the algebraic sum of all voltages
around any closed loop in a circuit is zero. This is a consequence of
conservation of energy. The sum of voltage rises equals the sum of voltage
drops.
7. The pole of the magnet from which the flux leaves is called the:
A) North pole
B) South pole
C) East pole
D) West pole
Answer: A) North pole
