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Question

In the circuit shown, if a conducting wire is connected between points A and B, the current in this wire will

A
Flow from A to B
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B
Flow in the direction which will be decided by the value of V
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C
Be zero
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D
Flow form B to A
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Solution

The correct option is D Flow form B to A
This is not a Wheatstone circuit since

4143.


current in upper wire,
I1=44+8I=4I12=I3
current in lower wire,
I2=II3=2I3
Let c is the leftmost junction,
For wire CA,
Vc4I3=VA
For wire CB,
Vc2I3=VB
From above two equations we can clearly say,
VB>VA
Current flows from higher potential to lower potential, so it flows from B to A.

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