Circuit Theory – Multiple Choice Questions (MCQs)

1. 1. What is the SI unit of electric current?

   • A. Volt
   • B. Ampere
   • C. Ohm
   • D. Watt

2. 2. Ohm's Law states that:

   • A. V = IR
   • B. V = I/R
   • C. V = R/I
   • D. V = I^2R

3. 3. Which of the following is a passive component?

   • A. Transistor
   • B. Diode
   • C. Resistor
   • D. Op-Amp

4. 4. What is the unit of electrical resistance?

   • A. Volt
   • B. Ampere
   • C. Ohm
   • D. Farad

5. 5. Kirchhoff's Current Law (KCL) is based on the conservation of:

   • A. Energy
   • B. Charge
   • C. Momentum
   • D. Power

6. 6. Kirchhoff's Voltage Law (KVL) is based on the conservation of:

   • A. Energy
   • B. Charge
   • C. Momentum
   • D. Power

7. 7. What is the reciprocal of resistance?

   • A. Conductance
   • B. Reactance
   • C. Impedance
   • D. Susceptance

8. 8. The unit of conductance is:

   • A. Ohm
   • B. Siemens (or Mho)
   • C. Farad
   • D. Henry

9. 9. What is the SI unit of electric potential difference?

   • A. Ampere
   • B. Ohm
   • C. Volt
   • D. Watt

10. 10. The property of a material that opposes the flow of electric current is called:

    • A. Conductance
    • B. Resistance
    • C. Capacitance
    • D. Inductance

11. 11. A capacitor stores energy in the form of:

    • A. Magnetic field
    • B. Electric field
    • C. Kinetic energy
    • D. Heat

12. 12. The unit of capacitance is:

    • A. Henry
    • B. Farad
    • C. Ohm
    • D. Siemens