Question
Calculate the equivalent resistance between the points $A$ and $B$ for the following combination of resistors:

Answer


$\frac{1}{ R _{1^{\prime}}}=\frac{1}{12}+\frac{1}{4}+\frac{1}{6}=\frac{1+3+2}{12}=\frac{6}{12}$
$\frac{1}{ R _1^{\prime}}=\frac{1}{2}$
$R_1' = 2 \Omega$
Total resistance $= 5 + 2 + 6 = 13$ ohm.

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