Chapter 2

Question 1

What are advanced circuit theorems used for?

Answer 1

To analyse and simplify complex electrical circuits, optimize designs and analyse circuit performance in various applications
from electronics to power systems.

Question 2

What are the three theorems?

Answer 2

Thevenin’s, Norton’s and the Superposition
Theorems

Question 3

What the three theorems assume?

Answer 3

The internal resistance of an ideal voltage source is 0 Ω (i.e., a short-circuit) and the internal resistance of an ideal current source is infinity (i.e., an open-circuit).

Question 4

What is Thevenin’s theorem?

Answer 4

A technique that simplifies complex electric circuits into simpler equivalent circuits, making it easier to calculate the voltage, current and power in electronic circuits.

Question 5

temp

Question 6

Rules of Thevenin’s Theorem

Answer 6

1. Remove the load resistor (the one in the middle and replace it by an open circuit.
2. Find the Thevenin voltage 𝑉ₜ across the open circuit.
3. Replace voltage sources by short circuits and current sources by open circuits and then find 𝑅ₜ.
   𝑅ₜ =(R₁ x R₂) / (R₁ + R₂)
4. Draw the Thevenin equivalent circuit then put back the load resistance 𝑅𝐿 to find the current flowing through the load. Remember that 𝑅𝐿 is placed in series with 𝑅𝑇
   I = V / R =