Question Details

The output voltage V (in Volt) for the network given in the Figure is . (rounded off to two decimal places)

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Correct Answer :

1.00

Solution :

The correct answer is 1.00.

Step-by-step Explanation:

Let us analyze the given circuit diagram by labeling the nodes and applying Kirchhoff's Current Law (KCL):
1. Let the bottom wire be the reference node (Ground, Vref=0 V).
2. The top wire is at the potential Vo with respect to the reference node, which represents the output voltage we need to find.
3. Let the node between the two left resistors be node A at node voltage VA.
4. Let the node between the two right resistors be node B at node voltage VB.
5. A 6 V independent voltage source is connected between node A and node B with the positive terminal at node A, giving:

VA-VB=6 V

1. Applying KCL at the bottom node (Ground, 0 V):
The current source of 1 mA is connected between the bottom wire and the top wire, drawing current out of the bottom node. The two bottom 1 kΩ resistors are connected to this reference node. Applying KCL at the bottom node:

VA1 kΩ+VB1 kΩ=1 mA

Multiplying the entire equation by 1 kΩ:

VA+VB=1 V

2. Applying KCL at the top node (Vo):
The current source injects 1 mA into the top node. The current leaves the top node through the two top 1 kΩ resistors connected to nodes A and B:

1 mA=Vo-VA1 kΩ+Vo-VB1 kΩ

Multiplying by 1 kΩ:

1=Vo-VA+Vo-VB

Rearranging the terms:

2Vo-(VA+VB)=1

2Vo=VA+VB+1

3. Solving for Vo:
Substitute the value of VA+VB=1 V from KCL at the bottom node into the top node equation:

2Vo=1+1

2Vo=2

Vo=1.00 V

Thus, the output voltage Vo is exactly 1.00 V.

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