© 2026 Copy Right Reserved.
Electrical Theory and Circuit Fundamentals
Exam I | Questions And Answers With Verified
Rationales | 2026/27 Qs & Ans Digital Pdf
Download
1. What is the SI unit of electric current?
A. Volt
B. Ohm
C. Ampere
D. Watt
Answer: C. Ampere
Rationale: Electric current is measured in amperes, which represents the
flow of electric charge per second.
2. Ohm’s Law is expressed as:
A. V = IR
B. P = IV
C. I = VR
D. R = VI
Answer: A. V = IR
Rationale: Ohm’s Law defines the relationship between voltage, current,
and resistance.
1
, © 2026 Copy Right Reserved.
3. A material that allows free flow of electrons is called:
A. Insulator
B. Semiconductor
C. Conductor
D. Resistor
Answer: C. Conductor
Rationale: Conductors such as copper allow electrons to flow easily.
4. The unit of electrical resistance is:
A. Volt
B. Ohm
C. Ampere
D. Coulomb
Answer: B. Ohm
Rationale: Resistance is measured in ohms (Ω).
5. Electrical power is measured in:
A. Watts
B. Volts
C. Amperes
D. Ohms
Answer: A. Watts
Rationale: Power represents energy consumption per unit time.
2
, © 2026 Copy Right Reserved.
6. Which law states that current entering a junction equals current leaving it?
A. Ohm’s Law
B. Kirchhoff’s Voltage Law
C. Kirchhoff’s Current Law
D. Faraday’s Law
Answer: C. Kirchhoff’s Current Law
Rationale: KCL is based on conservation of charge.
7. A closed path for current flow is called:
A. Node
B. Loop
C. Branch
D. Circuit
Answer: D. Circuit
Rationale: A circuit must be a complete closed loop.
8. The opposition to current in AC circuits is called:
A. Resistance
B. Reactance
C. Conductance
D. Voltage
Answer: B. Reactance
3
, © 2026 Copy Right Reserved.
Rationale: Reactance occurs due to inductors and capacitors in AC
circuits.
9. The flow of electrons is known as:
A. Voltage
B. Current
C. Resistance
D. Power
Answer: B. Current
Rationale: Electric current is the movement of electrons.
10. A device that stores energy in an electric field is:
A. Resistor
B. Capacitor
C. Inductor
D. Transformer
Answer: B. Capacitor
Rationale: Capacitors store energy in an electric field between plates.
11. The unit of electric charge is:
A. Ampere
B. Coulomb
C. Volt
D. Watt
4
Electrical Theory and Circuit Fundamentals
Exam I | Questions And Answers With Verified
Rationales | 2026/27 Qs & Ans Digital Pdf
Download
1. What is the SI unit of electric current?
A. Volt
B. Ohm
C. Ampere
D. Watt
Answer: C. Ampere
Rationale: Electric current is measured in amperes, which represents the
flow of electric charge per second.
2. Ohm’s Law is expressed as:
A. V = IR
B. P = IV
C. I = VR
D. R = VI
Answer: A. V = IR
Rationale: Ohm’s Law defines the relationship between voltage, current,
and resistance.
1
, © 2026 Copy Right Reserved.
3. A material that allows free flow of electrons is called:
A. Insulator
B. Semiconductor
C. Conductor
D. Resistor
Answer: C. Conductor
Rationale: Conductors such as copper allow electrons to flow easily.
4. The unit of electrical resistance is:
A. Volt
B. Ohm
C. Ampere
D. Coulomb
Answer: B. Ohm
Rationale: Resistance is measured in ohms (Ω).
5. Electrical power is measured in:
A. Watts
B. Volts
C. Amperes
D. Ohms
Answer: A. Watts
Rationale: Power represents energy consumption per unit time.
2
, © 2026 Copy Right Reserved.
6. Which law states that current entering a junction equals current leaving it?
A. Ohm’s Law
B. Kirchhoff’s Voltage Law
C. Kirchhoff’s Current Law
D. Faraday’s Law
Answer: C. Kirchhoff’s Current Law
Rationale: KCL is based on conservation of charge.
7. A closed path for current flow is called:
A. Node
B. Loop
C. Branch
D. Circuit
Answer: D. Circuit
Rationale: A circuit must be a complete closed loop.
8. The opposition to current in AC circuits is called:
A. Resistance
B. Reactance
C. Conductance
D. Voltage
Answer: B. Reactance
3
, © 2026 Copy Right Reserved.
Rationale: Reactance occurs due to inductors and capacitors in AC
circuits.
9. The flow of electrons is known as:
A. Voltage
B. Current
C. Resistance
D. Power
Answer: B. Current
Rationale: Electric current is the movement of electrons.
10. A device that stores energy in an electric field is:
A. Resistor
B. Capacitor
C. Inductor
D. Transformer
Answer: B. Capacitor
Rationale: Capacitors store energy in an electric field between plates.
11. The unit of electric charge is:
A. Ampere
B. Coulomb
C. Volt
D. Watt
4
