A) \[-0. 15 volt\]
B) \[0.15 volt\]
C) \[0.5 volt\]
D) \[~-0.05\text{ }volt\]
Correct Answer: D
Solution :
[d]In a voltmeter |
\[V\propto l\] \[V=kl\] |
Now, it is given \[\operatorname{E}=1.1\] volt for \[{{l}_{1}}=440\operatorname{cm}\] and \[V=0.5volt\] for \[{{l}_{2}}=220\operatorname{cm}\] |
Let the error in reading of voltmeter be \[\Delta V\] then, \[1.1=400K\] and \[(0.5-\Delta V)=220K.\] |
\[\Rightarrow \]\[\frac{1.1}{440}=\frac{0.5-\Delta V}{220}\] \[\therefore \]\[\Delta V=-\,0.05\,volt.\] |
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