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What will be the change in the resistanc...

What will be the change in the resistance of a circuit between `A` and `F` consisting of five identical conductors, if two similar conductors are added as shown by the dashed line in figure?

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The correct Answer is:
A, B, C
`R_i+5R`
if connected by two equal resistors betwene `B` and `D` and between `C` and `E` the combination is a balanced wheatstone bridge and two resistors in series.
`:. R_f=R+R+R=3R=0.6R_i`
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