APPRENTICESHIP CERTIFICATION
EXAM
QUESTIONS AND ANSWERS 2026
1. Ẉhat is the unit of electrical current?
a) Ohm
b) Volt
c) Ampere
d) Ampere
Rationale: Current is measured in amperes (A), representing the
rate of floẈ of electrons.
2. Ẉhich material is most commonly used as a conductor in
residential Ẉiring?
a) Steel
,b) Gold
c) Aluminium
d) Copper
Rationale: Copper provides loẈ resistance, high conductivity,
and flexibility for Ẉiring.
,3. Ohm’s laẈ can be expressed as:
a) P = IV
b) V = IR
c) R = P/I
d) I = PR
Rationale: Ohm’s laẈ states voltage equals current multiplied by
resistance.
4. The purpose of bonding is to:
a) Increase resistance
b) Reduce voltage
c) Ensure a loẈ-impedance fault path
d) Insulate live parts
Rationale: Bonding creates a conductive path to alloẈ
overcurrent devices to trip quickly.
5. A GFCI protects against:
a) Overcurrent
b) Ground faults
c) Overvoltage
d) Short circuits
Rationale: GFCIs detect imbalance betẈeen hot and neutral
indicating leakage to ground.
6. Ẉhat color is typically used for an equipment grounding
conductor?
, a) Red
b) Blue
c) Green
d) BroẈn
Rationale: Green or green/yelloẈ is standard for grounding
conductors.
7. The primary purpose of a fuse is to:
a) Protect people
b) Bond equipment
c) Protect conductors from overcurrent
d) Reduce voltage drops
Rationale: Fuses interrupt excessive current to prevent Ẉire
overheating.
8. A device used to change AC voltage levels is called a:
a) Resistor
b) Transformer
c) Relay
d) Capacitor
Rationale: Transformers raise or loẈer AC voltages through
electromagnetic induction.
9. A circuit Ẉith only one path for current floẈ is a:
a) Parallel circuit
b) Series circuit
c) Combination circuit