A) \[0.2\,\,\Omega \]
B) \[0.3\,\,\Omega \]
C) \[0.4\,\,\Omega \]
D) \[0.52\,\,\Omega \]
Correct Answer: A
Solution :
Shunt\[S={{I}_{g}}G/I-{{I}_{g}},\]where\[{{I}_{g}}\]is range of galvanometer \[=2\text{ }mA\] Resistance of galvanometer\[G=30\,\Omega \] range of ammeter\[I=0.03\text{ }A\] \[S=\frac{{{I}_{g}}G}{I-{{I}_{g}}}=\frac{0.002\times 30}{0.03-0.002}=0.02\,\Omega \]
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