MCQ
The equivalent resistance between the points $A$ and $B$ is :-
  • A
    $\frac{36}{7}\, \Omega$
  • B
    $10\,  \Omega$
  • $\frac{85}{7}\, \Omega$
  • D
    None of these

Answer

Correct option: C.
$\frac{85}{7}\, \Omega$
c
$R_{A B}=\frac{9 \times 12}{9+12}+7$

$=\frac{85}{7}$

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