A) \[4\times {{10}^{-1}}V\]
B) \[2\times {{10}^{-3}}V\]
C) \[4\times {{10}^{-3}}V\]
D) \[2\times {{10}^{-1}}V\]
Correct Answer: C
Solution :
Error in measurement = Actual value - Measured value Actual value \[=2V\] \[i=\frac{2}{998+2}=\frac{1}{500}A\] Since \[E=V+ir\] \[\Rightarrow \] \[V=E-ir\] \[=2-\frac{1}{500}\times 2=\frac{998}{500}\] \[\therefore \] Measured value\[=\frac{998}{500}\] \[\Rightarrow \] Error\[=2-\frac{998}{500}=4\times {{10}^{-3}}V\]
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