A resistance R is to the measured using a meter bridge. Student chooses the standard resistance S to be 
He finds the null point at 
He is told to attempt to improve the accuracy. Which of the following is a useful way?
A
He should measure 
more accurately.
more accurately.
B
He should change S to 
and repeat the experiment.
and repeat the experiment.
C
He should change S to 
and repeat the experiment.
and repeat the experiment.
D
He should give up hope of a more accurate measurement with a meter bridge.
Text Solution
Verified by ExpertsThe correct answer is:
C
As the meter bridge is balanced,
or 
The accuracy of measuring can be improved if S and R are of the same order, i.e., S should be changed to 
.
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