Circuit Theory & Networks interview questions

27 Circuit Theory & Networks questions from the Electrical Core bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.

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1. What is Ohm's law?

Junior
  1. A.current through a conductor is directly proportional to the voltage across it at constant temperature, the constant being resistance
  2. B.in a linear circuit with several independent sources, the total response equals the sum of responses to each source acting alone
  3. C.the algebraic sum of currents entering any node is zero, a direct consequence of conservation of charge
  4. D.any linear two-terminal network can be replaced by a single voltage source in series with an equivalent resistance

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2. Which term means: "current through a conductor is directly proportional to the voltage across it at constant temperature, the constant being resistance"?

Junior
  1. A.Maximum power transfer theorem
  2. B.Ohm's law
  3. C.Norton's theorem
  4. D.Quality factor

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3. Which statement is correct?

Junior
  1. A.Ohm's law — any linear two-terminal network can be replaced by a single current source in parallel with an equivalent resistance
  2. B.Ohm's law — the algebraic sum of currents entering any node is zero, a direct consequence of conservation of charge
  3. C.Ohm's law — in a linear circuit with several independent sources, the total response equals the sum of responses to each source acting alone
  4. D.Ohm's law — current through a conductor is directly proportional to the voltage across it at constant temperature, the constant being resistance

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4. What is Kirchhoff's current law?

Junior
  1. A.condition where inductive and capacitive reactances cancel, so impedance is minimum and purely resistive and current is maximum
  2. B.any linear two-terminal network can be replaced by a single current source in parallel with an equivalent resistance
  3. C.the algebraic sum of currents entering any node is zero, a direct consequence of conservation of charge
  4. D.any linear two-terminal network can be replaced by a single voltage source in series with an equivalent resistance

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5. Which term means: "the algebraic sum of currents entering any node is zero, a direct consequence of conservation of charge"?

Junior
  1. A.Kirchhoff's current law
  2. B.Norton's theorem
  3. C.Ohm's law
  4. D.Maximum power transfer theorem

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6. Which statement is correct?

Junior
  1. A.Kirchhoff's current law — any linear two-terminal network can be replaced by a single current source in parallel with an equivalent resistance
  2. B.Kirchhoff's current law — any linear two-terminal network can be replaced by a single voltage source in series with an equivalent resistance
  3. C.Kirchhoff's current law — the algebraic sum of currents entering any node is zero, a direct consequence of conservation of charge
  4. D.Kirchhoff's current law — a load receives maximum power when its impedance equals the complex conjugate of the source impedance, at only 50% efficiency

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7. What is Kirchhoff's voltage law?

Junior
  1. A.current through a conductor is directly proportional to the voltage across it at constant temperature, the constant being resistance
  2. B.condition where inductive and capacitive reactances cancel, so impedance is minimum and purely resistive and current is maximum
  3. C.ratio of resonant frequency to bandwidth, equal to omega·L/R for a series RLC circuit, indicating selectivity of the circuit
  4. D.the algebraic sum of voltages around any closed loop is zero, a direct consequence of conservation of energy

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8. Which term means: "the algebraic sum of voltages around any closed loop is zero, a direct consequence of conservation of energy"?

Junior
  1. A.Maximum power transfer theorem
  2. B.Ohm's law
  3. C.Series RLC resonance
  4. D.Kirchhoff's voltage law

Answer + AI explanation with Pro

9. Which statement is correct?

Junior
  1. A.Kirchhoff's voltage law — condition where inductive and capacitive reactances cancel, so impedance is minimum and purely resistive and current is maximum
  2. B.Kirchhoff's voltage law — the algebraic sum of voltages around any closed loop is zero, a direct consequence of conservation of energy
  3. C.Kirchhoff's voltage law — the algebraic sum of currents entering any node is zero, a direct consequence of conservation of charge
  4. D.Kirchhoff's voltage law — current through a conductor is directly proportional to the voltage across it at constant temperature, the constant being resistance

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10. What is Thevenin's theorem?

Junior
  1. A.any linear two-terminal network can be replaced by a single voltage source in series with an equivalent resistance
  2. B.current through a conductor is directly proportional to the voltage across it at constant temperature, the constant being resistance
  3. C.ratio of resonant frequency to bandwidth, equal to omega·L/R for a series RLC circuit, indicating selectivity of the circuit
  4. D.condition where inductive and capacitive reactances cancel, so impedance is minimum and purely resistive and current is maximum

Answer + AI explanation with Pro

11. Which term means: "any linear two-terminal network can be replaced by a single voltage source in series with an equivalent resistance"?

Junior
  1. A.Maximum power transfer theorem
  2. B.Thevenin's theorem
  3. C.Kirchhoff's current law
  4. D.Series RLC resonance

Answer + AI explanation with Pro

12. Which statement is correct?

Junior
  1. A.Thevenin's theorem — the algebraic sum of currents entering any node is zero, a direct consequence of conservation of charge
  2. B.Thevenin's theorem — any linear two-terminal network can be replaced by a single voltage source in series with an equivalent resistance
  3. C.Thevenin's theorem — any linear two-terminal network can be replaced by a single current source in parallel with an equivalent resistance
  4. D.Thevenin's theorem — the algebraic sum of voltages around any closed loop is zero, a direct consequence of conservation of energy

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13. What is Norton's theorem?

Mid
  1. A.current through a conductor is directly proportional to the voltage across it at constant temperature, the constant being resistance
  2. B.the algebraic sum of voltages around any closed loop is zero, a direct consequence of conservation of energy
  3. C.condition where inductive and capacitive reactances cancel, so impedance is minimum and purely resistive and current is maximum
  4. D.any linear two-terminal network can be replaced by a single current source in parallel with an equivalent resistance

Answer + AI explanation with Pro

14. Which term means: "any linear two-terminal network can be replaced by a single current source in parallel with an equivalent resistance"?

Mid
  1. A.Quality factor
  2. B.Norton's theorem
  3. C.Ohm's law
  4. D.Thevenin's theorem

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15. Which statement is correct?

Mid
  1. A.Norton's theorem — ratio of resonant frequency to bandwidth, equal to omega·L/R for a series RLC circuit, indicating selectivity of the circuit
  2. B.Norton's theorem — in a linear circuit with several independent sources, the total response equals the sum of responses to each source acting alone
  3. C.Norton's theorem — any linear two-terminal network can be replaced by a single current source in parallel with an equivalent resistance
  4. D.Norton's theorem — condition where inductive and capacitive reactances cancel, so impedance is minimum and purely resistive and current is maximum

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16. What is Maximum power transfer theorem?

Mid
  1. A.the algebraic sum of voltages around any closed loop is zero, a direct consequence of conservation of energy
  2. B.ratio of resonant frequency to bandwidth, equal to omega·L/R for a series RLC circuit, indicating selectivity of the circuit
  3. C.in a linear circuit with several independent sources, the total response equals the sum of responses to each source acting alone
  4. D.a load receives maximum power when its impedance equals the complex conjugate of the source impedance, at only 50% efficiency

Answer + AI explanation with Pro

17. Which term means: "a load receives maximum power when its impedance equals the complex conjugate of the source impedance, at only 50% efficiency"?

Mid
  1. A.Maximum power transfer theorem
  2. B.Quality factor
  3. C.Kirchhoff's current law
  4. D.Thevenin's theorem

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18. Which statement is correct?

Mid
  1. A.Maximum power transfer theorem — the algebraic sum of voltages around any closed loop is zero, a direct consequence of conservation of energy
  2. B.Maximum power transfer theorem — in a linear circuit with several independent sources, the total response equals the sum of responses to each source acting alone
  3. C.Maximum power transfer theorem — the algebraic sum of currents entering any node is zero, a direct consequence of conservation of charge
  4. D.Maximum power transfer theorem — a load receives maximum power when its impedance equals the complex conjugate of the source impedance, at only 50% efficiency

Answer + AI explanation with Pro

19. What is Superposition theorem?

Mid
  1. A.any linear two-terminal network can be replaced by a single current source in parallel with an equivalent resistance
  2. B.current through a conductor is directly proportional to the voltage across it at constant temperature, the constant being resistance
  3. C.condition where inductive and capacitive reactances cancel, so impedance is minimum and purely resistive and current is maximum
  4. D.in a linear circuit with several independent sources, the total response equals the sum of responses to each source acting alone

Answer + AI explanation with Pro

20. Which term means: "in a linear circuit with several independent sources, the total response equals the sum of responses to each source acting alone"?

Mid
  1. A.Thevenin's theorem
  2. B.Kirchhoff's voltage law
  3. C.Superposition theorem
  4. D.Norton's theorem

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21. Which statement is correct?

Mid
  1. A.Superposition theorem — in a linear circuit with several independent sources, the total response equals the sum of responses to each source acting alone
  2. B.Superposition theorem — the algebraic sum of voltages around any closed loop is zero, a direct consequence of conservation of energy
  3. C.Superposition theorem — ratio of resonant frequency to bandwidth, equal to omega·L/R for a series RLC circuit, indicating selectivity of the circuit
  4. D.Superposition theorem — current through a conductor is directly proportional to the voltage across it at constant temperature, the constant being resistance

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22. What is Series RLC resonance?

Mid
  1. A.any linear two-terminal network can be replaced by a single voltage source in series with an equivalent resistance
  2. B.the algebraic sum of currents entering any node is zero, a direct consequence of conservation of charge
  3. C.current through a conductor is directly proportional to the voltage across it at constant temperature, the constant being resistance
  4. D.condition where inductive and capacitive reactances cancel, so impedance is minimum and purely resistive and current is maximum

Answer + AI explanation with Pro

23. Which term means: "condition where inductive and capacitive reactances cancel, so impedance is minimum and purely resistive and current is maximum"?

Mid
  1. A.Norton's theorem
  2. B.Series RLC resonance
  3. C.Ohm's law
  4. D.Kirchhoff's current law

Answer + AI explanation with Pro

24. Which statement is correct?

Mid
  1. A.Series RLC resonance — any linear two-terminal network can be replaced by a single current source in parallel with an equivalent resistance
  2. B.Series RLC resonance — current through a conductor is directly proportional to the voltage across it at constant temperature, the constant being resistance
  3. C.Series RLC resonance — condition where inductive and capacitive reactances cancel, so impedance is minimum and purely resistive and current is maximum
  4. D.Series RLC resonance — a load receives maximum power when its impedance equals the complex conjugate of the source impedance, at only 50% efficiency

Answer + AI explanation with Pro

25. What is Quality factor?

Senior
  1. A.the algebraic sum of voltages around any closed loop is zero, a direct consequence of conservation of energy
  2. B.current through a conductor is directly proportional to the voltage across it at constant temperature, the constant being resistance
  3. C.ratio of resonant frequency to bandwidth, equal to omega·L/R for a series RLC circuit, indicating selectivity of the circuit
  4. D.a load receives maximum power when its impedance equals the complex conjugate of the source impedance, at only 50% efficiency

Answer + AI explanation with Pro

26. Which term means: "ratio of resonant frequency to bandwidth, equal to omega·L/R for a series RLC circuit, indicating selectivity of the circuit"?

Senior
  1. A.Series RLC resonance
  2. B.Ohm's law
  3. C.Quality factor
  4. D.Kirchhoff's current law

Answer + AI explanation with Pro

27. Which statement is correct?

Senior
  1. A.Quality factor — condition where inductive and capacitive reactances cancel, so impedance is minimum and purely resistive and current is maximum
  2. B.Quality factor — a load receives maximum power when its impedance equals the complex conjugate of the source impedance, at only 50% efficiency
  3. C.Quality factor — ratio of resonant frequency to bandwidth, equal to omega·L/R for a series RLC circuit, indicating selectivity of the circuit
  4. D.Quality factor — any linear two-terminal network can be replaced by a single current source in parallel with an equivalent resistance

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