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What is the Thevenin equivalent voltage across terminals A and B in a circuit wi

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Question: What is the Thevenin equivalent voltage across terminals A and B in a circuit with a 10V source and a 5Ω resistor in series with a 10Ω resistor?

Options:

  1. 10V
  2. 6.67V
  3. 5V
  4. 15V

Correct Answer: 6.67V

Solution: 

The voltage across the 10Ω resistor is V = (10V * 10Ω) / (5Ω + 10Ω) = 6.67V.

What is the Thevenin equivalent voltage across terminals A and B in a circuit wi

Practice Questions

Q1
What is the Thevenin equivalent voltage across terminals A and B in a circuit with a 10V source and a 5Ω resistor in series with a 10Ω resistor?
  1. 10V
  2. 6.67V
  3. 5V
  4. 15V

Questions & Step-by-Step Solutions

What is the Thevenin equivalent voltage across terminals A and B in a circuit with a 10V source and a 5Ω resistor in series with a 10Ω resistor?
  • Step 1: Identify the components in the circuit. We have a 10V voltage source, a 5Ω resistor, and a 10Ω resistor in series.
  • Step 2: Understand that in a series circuit, the total resistance is the sum of the individual resistances. Calculate the total resistance: 5Ω + 10Ω = 15Ω.
  • Step 3: Use Ohm's Law to find the current flowing through the circuit. The current (I) can be calculated using the formula I = V / R, where V is the voltage and R is the total resistance. Here, I = 10V / 15Ω = 0.67A.
  • Step 4: Now, find the voltage across the 10Ω resistor. Use the formula V = I * R, where I is the current we just calculated and R is the resistance of the 10Ω resistor. So, V = 0.67A * 10Ω = 6.67V.
  • Step 5: The Thevenin equivalent voltage across terminals A and B is the voltage across the 10Ω resistor, which is 6.67V.
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