FE Electrical and Computer
Exam Questions And Correct
Answers (Verified Answers)
Plus Rationales 2025/2026
Q&A | Instant Download Pdf
1. What is the SI unit of electric charge?
A. Volt
B. Coulomb
C. Ampere
D. Ohm
Answer: B. Coulomb
The coulomb (C) is the SI unit of electric charge. One coulomb equals
the charge transported by a current of one ampere in one second.
2. A current of 5 A flows through a resistor of 10 Ω. What is the
voltage across the resistor?
A. 2 V
B. 15 V
C. 50 V
D. 100 V
Answer: C. 50 V
Using Ohm's Law, V = IR = (5 A)(10 Ω) = 50 V.
,3. What is the power dissipated by a 20 Ω resistor carrying 3 A?
A. 60 W
B. 180 W
C. 90 W
D. 120 W
Answer: B. 180 W
Power is P = I²R = (3²)(20) = 180 W.
4. Which law states that the algebraic sum of currents entering a
node equals zero?
A. Faraday's Law
B. Kirchhoff's Voltage Law
C. Kirchhoff's Current Law
D. Ohm's Law
Answer: C. Kirchhoff's Current Law
KCL is based on conservation of charge at a circuit node.
5. The equivalent resistance of two 12 Ω resistors connected in
parallel is:
A. 24 Ω
B. 12 Ω
C. 6 Ω
D. 3 Ω
Answer: C. 6 Ω
For equal resistors in parallel, Req = R/2 = 12/2 = 6 Ω.
6. A capacitor stores energy in its:
,A. Magnetic field
B. Electric field
C. Thermal field
D. Mechanical field
Answer: B. Electric field
Capacitors store energy in the electric field between their plates.
7. The energy stored in a capacitor is:
A. CV²
B. ½CV²
C. IV
D. QV
Answer: B. ½CV²
The standard capacitor energy equation is E = ½CV².
8. What is the reactance of a 100 μF capacitor at 60 Hz?
A. 26.5 Ω
B. 53 Ω
C. 79.6 Ω
D. 100 Ω
Answer: A. 26.5 Ω
XC = 1/(2πfC) = 1/(2π×60×100×10⁻⁶) ≈ 26.5 Ω.
9. Which component opposes changes in current?
A. Capacitor
B. Resistor
, C. Inductor
D. Diode
Answer: C. Inductor
An inductor resists changes in current due to its stored magnetic
field.
10. The inductive reactance of an inductor is:
A. 1/(2πfL)
B. 2πfL
C. L/f
D. f/L
Answer: B. 2πfL
Inductive reactance increases linearly with frequency.
11. In a purely resistive AC circuit, voltage and current are:
A. 90° apart
B. 180° apart
C. In phase
D. Out of phase
Answer: C. In phase
Resistors do not introduce phase shift between voltage and current.
12. RMS value of a sinusoidal voltage with peak value 170 V is:
A. 85 V
B. 120 V
C. 170 V
D. 240 V
Exam Questions And Correct
Answers (Verified Answers)
Plus Rationales 2025/2026
Q&A | Instant Download Pdf
1. What is the SI unit of electric charge?
A. Volt
B. Coulomb
C. Ampere
D. Ohm
Answer: B. Coulomb
The coulomb (C) is the SI unit of electric charge. One coulomb equals
the charge transported by a current of one ampere in one second.
2. A current of 5 A flows through a resistor of 10 Ω. What is the
voltage across the resistor?
A. 2 V
B. 15 V
C. 50 V
D. 100 V
Answer: C. 50 V
Using Ohm's Law, V = IR = (5 A)(10 Ω) = 50 V.
,3. What is the power dissipated by a 20 Ω resistor carrying 3 A?
A. 60 W
B. 180 W
C. 90 W
D. 120 W
Answer: B. 180 W
Power is P = I²R = (3²)(20) = 180 W.
4. Which law states that the algebraic sum of currents entering a
node equals zero?
A. Faraday's Law
B. Kirchhoff's Voltage Law
C. Kirchhoff's Current Law
D. Ohm's Law
Answer: C. Kirchhoff's Current Law
KCL is based on conservation of charge at a circuit node.
5. The equivalent resistance of two 12 Ω resistors connected in
parallel is:
A. 24 Ω
B. 12 Ω
C. 6 Ω
D. 3 Ω
Answer: C. 6 Ω
For equal resistors in parallel, Req = R/2 = 12/2 = 6 Ω.
6. A capacitor stores energy in its:
,A. Magnetic field
B. Electric field
C. Thermal field
D. Mechanical field
Answer: B. Electric field
Capacitors store energy in the electric field between their plates.
7. The energy stored in a capacitor is:
A. CV²
B. ½CV²
C. IV
D. QV
Answer: B. ½CV²
The standard capacitor energy equation is E = ½CV².
8. What is the reactance of a 100 μF capacitor at 60 Hz?
A. 26.5 Ω
B. 53 Ω
C. 79.6 Ω
D. 100 Ω
Answer: A. 26.5 Ω
XC = 1/(2πfC) = 1/(2π×60×100×10⁻⁶) ≈ 26.5 Ω.
9. Which component opposes changes in current?
A. Capacitor
B. Resistor
, C. Inductor
D. Diode
Answer: C. Inductor
An inductor resists changes in current due to its stored magnetic
field.
10. The inductive reactance of an inductor is:
A. 1/(2πfL)
B. 2πfL
C. L/f
D. f/L
Answer: B. 2πfL
Inductive reactance increases linearly with frequency.
11. In a purely resistive AC circuit, voltage and current are:
A. 90° apart
B. 180° apart
C. In phase
D. Out of phase
Answer: C. In phase
Resistors do not introduce phase shift between voltage and current.
12. RMS value of a sinusoidal voltage with peak value 170 V is:
A. 85 V
B. 120 V
C. 170 V
D. 240 V
