A) He should measure \[{{l}_{1}}\] more accurately.
B) He should change S to 1000\[\Omega \] and repeat the experiment.
C) He should change S to 3 \[\Omega \] and repeat the experiment.
D) He should give up hope of a more accurate measurement with a meter bridge.
Correct Answer: C
Solution :
Option [c] is correct. |
Explanation: To calculate resistance, R |
=\[100\left[ \frac{2.9}{97.1} \right]\] |
So to get balance point near to 50 cm (middle) we have to take S = 3\[\Omega \] , as here R : S =2.9 : 97.1 implies that S is nearly 33 times to R. |
In order to make ratio R and S = 1:1, we must take the resistance S = 3\[\Omega \], which verifies options (C). |
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