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 \[\frac{1}{{{R}_{eq}}}=\frac{1}{{{R}_{1}}}+\frac{1}{{{R}_{2}}}+\frac{1}{{{R}_{3}}}\] \[\frac{1}{{{R}_{eq}}}=\frac{1}{1.2}+\frac{1}{2}+\frac{1}{3}\] \[\frac{1}{{{R}_{eq}}}=\frac{6+3.6+2.4}{1.2\times 2\times 3}\] \[{{R}_{eq}}=\frac{7.2}{12}\] \[=0.6\,\Omega \] It is less than\[1.2\,\Omega \].
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