A meter bridge is set up as shown in figure, to determine an unknown resistance $X$ using a standard $10 \Omega$ resistor. The galvanometer shows null point when tapping key is at $52 \mathrm{~cm}$ mark. The end-corrections are $1 \mathrm{~cm}$ and $2 \mathrm{~cm}$ respectively for the ends $A$ and $B$ . The determined value of $X$ is

Question

A meter bridge is set up as shown in figure, to determine an unknown resistance

X

using a standard

10 \Omega

resistor. The galvanometer shows null point when tapping key is at

52 \mathrm{~cm}

mark. The end-corrections are

1 \mathrm{~cm}

and

2 \mathrm{~cm}

respectively for the ends

A

and

B

. The determined value of

X

is

A meter bridge is set up as shown in figure, to determine an unknown resistance X using a standard 10 resistor. The

Quantrex Academy · Accepted Answer

Correct answer: B. 10.6

Using the concept of balanced Wheatstone bridge, we have array rlrl & (P)/(Q)& =(R)/(S) & & (X)/((52+1))& =(10)/((48+2)) & & X & =(10 × 53)/(50)=10.6 array Correct option is (b). Analysis of Question Question is moderately tough, because normally end corrections are not taught in the coaching/schools in this type of problem.

A meter bridge is set up as shown in figure, to determine an...

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