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?
10V
6.67V
5V
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.
