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What is the equivalent voltage source in Thevenin's theorem?

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Question: What is the equivalent voltage source in Thevenin\'s theorem?

Options:

  1. The open-circuit voltage
  2. The short-circuit current
  3. The total current
  4. The total resistance

Correct Answer: The open-circuit voltage

Solution: 

Thevenin\'s theorem states that any linear circuit can be replaced by an equivalent circuit consisting of a single voltage source (the open-circuit voltage) and a series resistance.

What is the equivalent voltage source in Thevenin's theorem?

Practice Questions

Q1
What is the equivalent voltage source in Thevenin's theorem?
  1. The open-circuit voltage
  2. The short-circuit current
  3. The total current
  4. The total resistance

Questions & Step-by-Step Solutions

What is the equivalent voltage source in Thevenin's theorem?
  • Step 1: Understand that Thevenin's theorem helps simplify complex circuits.
  • Step 2: Identify the part of the circuit you want to analyze.
  • Step 3: Remove the load resistor (if there is one) from the circuit.
  • Step 4: Calculate the open-circuit voltage (Voc) across the terminals where the load was connected. This is your equivalent voltage source.
  • Step 5: Find the equivalent resistance (Rth) of the circuit by turning off all independent sources (replace voltage sources with short circuits and current sources with open circuits) and calculating the resistance seen from the terminals.
  • Step 6: Now you have an equivalent circuit with a single voltage source (Voc) in series with a resistance (Rth).
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