A meter bridge is set-up as shown, to determine an unknown resistance $X$ using a standard $10 \mathrm{ohm}$ 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, to determine an unknown resistance

X

using a standard

10 \mathrm{ohm}

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

Quantrex Academy · Accepted Answer

Correct answer: B. 10.6 ohm

Applying the condition of balanced Wheatstone bridge, we get aligned & (X)/(10 )= (52+1) cm (48+2) cm =(53)/(50), & X=10 × (53)/(50)=10.6 aligned

A meter bridge is set-up as shown, to determine an unknown...