Find the equivalent resistance between $P$ and $Q.$ (If each wire has a resistance $R$ )
A$\frac {5}{6}\,R$
B$\frac {3}{4}\,R$
C$\frac {19}{12}\,R$
D$\frac {31}{12}\,R$
Diffcult
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D$\frac {31}{12}\,R$
d
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