When all the resistances in the circuit are 1 Ω each, then the equivalent resistance across points A & B will be
5/6 Ω
1/2 Ω
2/3 Ω
1/3 Ω
A
1/2 Ω
B
2/3 Ω
C
1/3 Ω
D
5/6 Ω
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Solution
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Since R1 and R2 are short circuit,the circuit can be re arrange(see figure-2).Now all resistance are in paralell, So Equivalent Resistance can be found using formula for parallel combination.
1Req=1R1+1R2+1R3+......
⇒1Req=11+11+11
⇒Req=13Ω
Therefore, D is correct answer.
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