- 1. Introduction to circuits and circuit analysis is a fundamental topic in electrical engineering that focuses on understanding the behavior of electrical circuits. Circuits are systems that allow the flow of electric current, which can be used to perform various functions such as powering devices, transmitting signals, and processing information.
What is the unit of resistance in a circuit?
A) Watt
B) Ohm
C) Ampere
D) Volt
- 2. What does a resistor do in a circuit?
A) Increases the voltage
B) Generates electricity
C) Stores energy
D) Limits the flow of current
- 3. Which component stores electrical charge in a circuit?
A) Inductor
B) Capacitor
C) Diode
D) Resistor
- 4. What is the unit of capacitance?
A) Ohm
B) Farad
C) Ampere
D) Henry
- 5. Which circuit element opposes changes in current?
A) Resistor
B) Diode
C) Inductor
D) Capacitor
- 6. What must be constant in a series circuit?
A) Resistance
B) Voltage
C) Power
D) Current
- 7. What law relates voltage, current, and resistance in a circuit?
A) Faraday's Law
B) Lenz's Law
C) Kirchhoff's Laws
D) Ohm's Law
- 8. Which material has a resistance value between that of conductors and insulators?
A) Semiconductor
B) Superconductor
C) Insulator
D) Conductor
- 9. What is used to protect circuits from current overloads?
A) Fuse
B) Switch
C) Inductor
D) Capacitor
- 10. Which type of circuit has multiple paths for current flow?
A) Series circuit
B) Closed circuit
C) Combination circuit
D) Parallel circuit
- 11. What does a diode allow in a circuit?
A) Capacitance
B) Current flow in one direction
C) Voltage drop
D) Inductance
- 12. Which circuit element is used to step up or step down voltage?
A) Transistor
B) Rectifier
C) Operational amplifier
D) Transformer
- 13. What is the unit of inductance?
A) Watt
B) Henry
C) Farad
D) Ohm
- 14. Which law states that the induced electromotive force in any closed circuit is equal to the rate of change of the magnetic flux through the circuit?
A) Ohm's Law
B) Lenz's Law
C) Faraday's Law
D) Kirchhoff’s Laws
- 15. Which circuit element is commonly used as a switch in electronic circuits?
A) Capacitor
B) Diode
C) Transistor
D) Resistor
- 16. What is used to measure electrical current in a circuit?
A) Voltmeter
B) Ammeter
C) Ohmmeter
D) Multimeter
- 17. Which of the following is a passive component in a circuit?
A) Resistor
B) Op-amp
C) Diode
D) Transistor
- 18. A current of 2A flows through a resistor with 5Ω resistance. What is the voltage across the resistor?
A) 2.5V
B) 12V
C) 10V
D) 7V
- 19. The combination of resistors in a circuit is known as a:
A) Current divider
B) Resistor network
C) Capacitor array
D) Voltage source
- 20. What property of a circuit represents its ability to store electrical energy?
A) Resistance
B) Conductance
C) Inductance
D) Capacitance
- 21. The SI unit of current is:
A) Volt
B) Coulomb
C) Ampere
D) Ohm
- 22. Which type of current reverses direction periodically?
A) Step
B) Pulse
C) AC
D) DC
- 23. What is the unit of electrical power?
A) Ampere
B) Watt
C) Ohm
D) Volt
- 24. A capacitor stores electrical energy in the form of:
A) Electromagnetic radiation
B) Heat
C) Electric field
D) Magnetic field
- 25. The time it takes for a capacitor to charge to about 63.2% of its maximum voltage in an RC circuit is determined by which constant?
A) Frequency
B) Power factor
C) Time constant
D) Inductance
- 26. What happens to total resistance in a series circuit as more resistors are added?
A) Decreases
B) Remains the same
C) Increases
D) Depends on resistor values
- 27. What is the formula for calculating power in an electrical circuit?
A) P = I2 * R
B) P = V / R
C) P = R / I
D) P = V * I
- 28. In a parallel circuit, what happens to total resistance as more resistors are added?
A) Decreases
B) Remains the same
C) Increases
D) Depends on resistor values
- 29. If a resistor has a voltage of 6V across it and a current of 2A flowing through it, what is the resistance value?
A) 3 Ohms
B) 12 Ohms
C) 4 Ohms
D) 8 Ohms
- 30. What is the property of a material that determines its ability to conduct electricity?
A) Permittivity
B) Insulation
C) Conductivity
D) Resistivity
- 31. What term refers to the opposition to the flow of electric current in a circuit?
A) Inductance
B) Capacitance
C) Conductance
D) Resistance
- 32. What law states that any linear circuit can be simplified to a single voltage source and a single resistor?
A) Maximum Power Theorem
B) Reciprocity Theorem
C) Thevenin's Theorem
D) Norton's Theorem
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