Electrical Engineering Question Bank with
Detailed Solutions and Explanations 2026
Section 1: Basic Electrical Engineering Concepts
### 1. What is the SI unit of electrical resistance?
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: C. Ohm
Rationale: Electrical resistance represents opposition to
current flow and is measured in ohms (Ω).
### 2. Which equation represents Ohm’s Law?
A. P = VI
B. V = IR
,C. I = V²R
D. R = P/I
Answer: B. V = IR
Rationale: Ohm’s Law states that voltage equals current
multiplied by resistance when temperature and other
conditions remain constant.
### 3. Electrical power in a DC circuit is calculated as:
A. P = VI
B. P = V/I
C. P = I/R
D. P = R/V
Answer: A. P = VI
Rationale: Electrical power is the product of voltage and
current and is measured in watts.
### 4. The flow of electrons through a conductor is called:
,A. Voltage
B. Current
C. Resistance
D. Capacitance
Answer: B. Current
Rationale: Electric current is the movement of electrical
charge through a material.
### 5. Voltage is best described as:
A. Opposition to current flow
B. Electrical potential difference
C. Rate of energy consumption
D. Stored magnetic energy
Answer: B. Electrical potential difference
Rationale: Voltage is the difference in electrical potential
between two points that drives current flow.
### 6. A conductor has:
, A. High resistance
B. Low resistance
C. No electrons
D. Infinite insulation
Answer: B. Low resistance
Rationale: Conductors contain free electrons that allow
current to flow easily.
### 7. Which material is commonly used for electrical
wiring?
A. Rubber
B. Glass
C. Copper
D. Plastic
Answer: C. Copper
Rationale: Copper is widely used because of its excellent
conductivity and mechanical strength.
Detailed Solutions and Explanations 2026
Section 1: Basic Electrical Engineering Concepts
### 1. What is the SI unit of electrical resistance?
A. Volt
B. Ampere
C. Ohm
D. Watt
Answer: C. Ohm
Rationale: Electrical resistance represents opposition to
current flow and is measured in ohms (Ω).
### 2. Which equation represents Ohm’s Law?
A. P = VI
B. V = IR
,C. I = V²R
D. R = P/I
Answer: B. V = IR
Rationale: Ohm’s Law states that voltage equals current
multiplied by resistance when temperature and other
conditions remain constant.
### 3. Electrical power in a DC circuit is calculated as:
A. P = VI
B. P = V/I
C. P = I/R
D. P = R/V
Answer: A. P = VI
Rationale: Electrical power is the product of voltage and
current and is measured in watts.
### 4. The flow of electrons through a conductor is called:
,A. Voltage
B. Current
C. Resistance
D. Capacitance
Answer: B. Current
Rationale: Electric current is the movement of electrical
charge through a material.
### 5. Voltage is best described as:
A. Opposition to current flow
B. Electrical potential difference
C. Rate of energy consumption
D. Stored magnetic energy
Answer: B. Electrical potential difference
Rationale: Voltage is the difference in electrical potential
between two points that drives current flow.
### 6. A conductor has:
, A. High resistance
B. Low resistance
C. No electrons
D. Infinite insulation
Answer: B. Low resistance
Rationale: Conductors contain free electrons that allow
current to flow easily.
### 7. Which material is commonly used for electrical
wiring?
A. Rubber
B. Glass
C. Copper
D. Plastic
Answer: C. Copper
Rationale: Copper is widely used because of its excellent
conductivity and mechanical strength.
