A) 0.01\[\Omega \]
B) 0.02\[\Omega \]
C) 0.03\[\Omega \]
D) 0.04\[\Omega \]
Correct Answer: B
Solution :
The current required for full-scale deflection is \[{{\text{i}}_{\text{g}}}\text{=}\frac{\text{PD}\,\text{across}\,\text{galvanometer}}{\text{resistance}\,\text{of}\,\text{galvanometer}}\] \[{{\text{i}}_{\text{g}}}\text{=}\frac{100\times {{10}^{-3}}}{100\Omega }={{10}^{-3}}A\] The shunt resistance required is \[S=\left( \frac{{{i}_{g}}}{i-{{i}_{g}}} \right)G=\left( \frac{{{10}^{-3}}}{5-{{10}^{-3}}} \right)\times 100=0.02\Omega \]You need to login to perform this action.
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