Question: What is the Thevenin equivalent voltage across a load resistor in a simple circuit with a 12 V source and a 4 ohm resistor in series with a 2 ohm load?

Options:

1. 12 V
2. 8 V
3. 6 V
4. 4 V

Correct Answer: 8 V

Solution:

The Thevenin equivalent voltage is the voltage across the load resistor, which can be found using voltage division: V_load = V_source * (R_load / (R_series + R_load)) = 12 V * (2 / (4 + 2)) = 8 V.