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Question

An electric circuit is shown in the figure. The potential difference between the points A & B is:


  1. 103V

  2. 203V

  3. 53V

  4. 73V

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Solution

The correct option is A

103V


Step 1: Given Data

R1=1ΩR2=1ΩR3=1ΩR4=1Ω

Step 2: Find potential differences between the points A & B

Let Node B be the reference node hence the voltage of this node will be zero and the potential at Agives the potential difference between A and B.

Applying Kirchhoff's current law at the node, we get

VA-22+VA-42+VA-42=0

VA12+12+12=5

VA32=5

VA=103V

Hence, option (A) is correct.


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