GATE EC 2022 Set 1 — Question 14
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Question
Consider the circuit shown in the figure. The current flowing through the resistor is _________.
Correct answer
(B) 0 A
Solution
Look carefully at how the two halves of the circuit are connected.
- The left half (3 V source, , ) has its bottom rail connected to ground.
- The right half (3 V source, , ) forms its own closed loop; its bottom rail is not connected to the ground of the left half.
- The only wire joining the two halves is the resistor.
- (A) A, (C) A, (D) A: would require a second return path between the two halves, which does not exist.
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