A) less than \[1.2\,\Omega \]
B) greater than \[1.2\,\Omega \]
C) between \[1.2\,\Omega \] and \[2\,\Omega \]
D) between \[2\,\Omega \] and \[3\,\Omega \]
Correct Answer: A
Solution :
For parallel circuit \[\frac{1}{{{R}_{eq}}}=\frac{1}{{{R}_{1}}}+\frac{1}{{{R}_{2}}}+\frac{1}{{{R}_{3}}}\] \[\frac{1}{{{R}_{eq}}}=\frac{1}{1.2}+\frac{1}{2}+\frac{1}{3}\] \[\frac{1}{{{R}_{eq}}}=\frac{6+3.6+2.4}{1.2\times 2\times 3}\] \[\frac{1}{{{R}_{eq}}}=\frac{7.2}{12}\] \[=0.6\,\,\Omega \] It is less than \[1.2\,\,\Omega \]
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