$A$ student obtained the following observations in an experiment of a meter bridge to find the unknown resistance of the circuit. The most accurate value of the unknown resistance is ............ $\Omega$.
$S.No.$ $R$ $l$ $100-l$ $S = \left( \frac{100-l}{l} \right)R$ $1$ $20\,\Omega$ $43$ $57$ $26.51\,\Omega$ $2$ $30\,\Omega$ $51$ $49$ $28.82\,\Omega$ $3$ $40\,\Omega$ $59$ $41$ $27.80\,\Omega$ $4$ $60\,\Omega$ $70$ $30$ $25.71\,\Omega$
| $S.No.$ | $R$ | $l$ | $100-l$ | $S = \left( \frac{100-l}{l} \right)R$ |
| $1$ | $20\,\Omega$ | $43$ | $57$ | $26.51\,\Omega$ |
| $2$ | $30\,\Omega$ | $51$ | $49$ | $28.82\,\Omega$ |
| $3$ | $40\,\Omega$ | $59$ | $41$ | $27.80\,\Omega$ |
| $4$ | $60\,\Omega$ | $70$ | $30$ | $25.71\,\Omega$ |
- A$26.51$
- B$28.82$
- C$27.80$
- D$25.71$
Explore More
Similar Questions
In a meter bridge,the resistances $R$ and $S$ are such that the null point is found at a distance of $40 \text{ cm}$ from one end. If a resistance of $10 \Omega$ is connected in parallel with shunt $S$,then the null point occurs at $90 \text{ cm}$ from the same end. The values of the two resistances $R$ and $S$ respectively are:
DifficultTS EAMCET 2020
View SolutionIn a meter bridge,the point $D$ is the neutral point (null point) as shown in the figure.
Medium
View SolutionResistances in the left gap and right gap of a meter bridge are $10 \Omega$ and $30 \Omega$ respectively. If the resistances in the two gaps are interchanged, the balance point will shift to the right by: (in $\text{cm}$)
$A$ resistance of $20 \Omega$ is connected in the left gap of a metre bridge and an unknown resistance greater than $20 \Omega$ is connected in the right gap. When these resistances are interchanged,the balance point shifts by $20 \text{ cm}$. The unknown resistance is (in $\Omega$)
In the meter bridge experiment,the length $AB$ of the wire is $1 \ m$. The resistors $X$ and $Y$ have values $5 \ \Omega$ and $2 \ \Omega$ respectively. When a shunt resistance $S$ is connected in parallel to $X$,the balancing point is found to be $0.625 \ m$ from $A$. Then,the resistance of the shunt $S$ is (in $\Omega$)
DifficultAP EAMCET 2013
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo