A) \[\frac{1}{499}G\]
B) \[\frac{499}{500}G\]
C) \[\frac{1}{500}G\]
D) \[\frac{500}{499}G\]
Correct Answer: C
Solution :
[c] As 0.2% of main current passes through the galvanometer hence\[\frac{998}{1000}I\]current through the shunt. \[\left( \frac{2I}{1000} \right)G=\left( \frac{998I}{1000} \right)S\] \[\Rightarrow \,\,\,S=\frac{G}{499}\] Total resistance of Ammeter \[R=\frac{SG}{S+G}=\frac{\left( \frac{G}{499} \right)G}{\left( \frac{G}{499} \right)+G}=\frac{G}{500}\]You need to login to perform this action.
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