Basic Electrical Engineering Laws MCQ [Questions with Answers]

Electrical Engineering is based on certain fundamental laws, principles, and theorems. The entire list includes Ohm’s law, Kirchhoff’s current and Voltage law, Current divider, Voltage divider, Norton theorem, Thevenin theorem, Superposition principle.

Given below are MCQ Questions on Basic Electrical Engineering Laws, Theorems, and Principles.

Let’s begin


The correct statement of Ohm’s law:

  1. V = IR
  2. V = R/I
  3. V = I2R
  4. V = IR2

Correct answer: 1. V = IR


A 20 Amps current source is connected to two parallel resistors having resistances (5 and 15 ohms respectively), the current across 15 ohms resistance is:

  1. 5 Amps
  2. 10 Amps
  3. 15 Amps
  4. 20 Amps

Current answer: 1. 5 Amps


A 12 V DC battery powers two series resistors: 1 kΩ and 3 kΩ. The voltage drop across 3 kΩ resistor is:

  1. 3 V
  2. 6 V
  3. 9 V
  4. 12 V

Correct answer: 3. 9 V


Any linear bilateral network can be reduced to a voltage source and a series resistor by using:

  1. Norton theorem
  2. Thevenin theorem
  3. Superposition theorem
  4. Maximum power transfer theorem

Correct answer: 2. Thevenin theorem


Any linear bilateral network can be reduced to a voltage source and a series resistor by using:

  1. Norton theorem
  2. Thevenin theorem
  3. Superposition theorem
  4. Maximum power transfer theorem

Correct answer: 1. Norton theorem

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