Five equal resistances are connected in a network as shown in figure. The net resistance between the points $A$ and $B$ is
A$2 R$
B$\frac{ R }{2}$
C$\frac{3 R }{2}$
D$R$
JEE MAIN 2021, Medium
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D$R$
d This diagram can be drawn like
It is a wheat stone bridge
$\therefore R _{ eq }=\frac{2 R \times 2 R }{2 R +2 R } \Rightarrow R$
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