A) \[4\,\,\Omega \]
B) \[6\,\,\Omega \]
C) \[8\,\,\Omega \]
D) \[12\,\,\Omega \]
Correct Answer: A
Solution :
The smallest, total resistance that can be obtained only by parallel connection of resistors. \[\frac{1}{R}=\frac{1}{{{R}_{1}}}+\frac{1}{{{R}_{2}}}=\frac{1}{6}+\frac{1}{12}=\frac{1}{4},R=4.0\,\Omega \]
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