Meter Bridge

In a meter bridge experiment, the one meter long wire used must possess

Shown in the figure below is a meter-bridge set up with null deflection in the galvanometer.

The value of the unknown resistor $R$ is:

In the given circuit, no current is passing through the galvanometer. If the cross-sectional diameter of the wire $AB$ is doubled, then for null point of galvanometer, the value of $AC$ would be:

In the shown arrangement of the experiment of the meter bridge if the length $AC$ corresponding to null deflection of galvanometer is $x,$ what would be its value if the radius of the wire $AB$ is doubled?

Meter bridge is used to find resistance of a wire using a standard resistance $20 \mathrm{\Omega }$ with $0.5\%$ tolerance. The unknown resistance is placed in left gap of the meter bridge. The null point is obtained at $60.0 \mathrm{cm}$ from left end. The maximum permissible error in this measurement is $0.1 \mathrm{cm}.$ Find the maximum error in measurement of the resistance.

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

$AB$is a wire of uniform resistance. The galvanometer $G$ shows no current when the length $AC=20 \mathrm{cm}$ and $CB=80 \mathrm{cm}.$ The resistance $R$ is equal to

In the shown arrangement of the experiment of the metre bridge, if length $\mathrm{AC}$ corresponding to null deflection of galvanometer is $x$, what would be its value if the radius of the wire $\mathrm{AB}$ is doubled? 

On interchanging the resistances, the balance point of a meter bridge shifts to the left by $10 \mathrm{cm}$. The resistance of their series combination is $1 \mathrm{k\Omega }$. How much was the resistance on the left slot before interchanging the resistances?

In a metre bridge experiment, null point is obtained at $20 \mathrm{cm}$ from one end of the wire when resistance $X$ is balanced against another resistance $Y$. If $X<Y$, then where will be the new position of the null point from the same end, if one decides to balance a resistance of $4X$ against $Y$?

The resistances in the two arms of the metre bridge are $5 \mathrm{\Omega }$ and $R \mathrm{\Omega }$ respectively. When the resistance $R$ is shunted with equal resistance, the new balance point is at $1.6l_1$ The resistance $R$, is

Two unknown resistances are connected in two gaps of a meter-bridge. The null point is obtained at $40 \mathrm{cm}$ from left end. A $30 \mathrm{\Omega }$ resistance is connected in series with the smaller of the two resistances, the null point shifts by $20 \mathrm{cm}$ to the right end. The value of smaller resistance in $\mathrm{\Omega }$ is 

An unknown resistance $R_1$ is connected in series with a resistance of $10 \mathrm{\Omega }$. This combination is connected to one gap of a metre bridge, while a resistance $R_2$ is connected in the other gap. The balance point is at $50 \mathrm{cm}$. Now, when the $10 \mathrm{\Omega }$ resistance is removed the balance point shifts to $40 \mathrm{cm}$. The value of $R_1$ is (in $\mathrm{\Omega }$) 

The resistances in the left and right gap of a meter bridge are $20 \mathrm{\Omega }$ and $30 \mathrm{\Omega }$ respectively. When the resistance in the left gap is reduced to half its value, the balance point shifts by 

Resistances in the two gaps of a metre bridge are $10 \mathrm{ohm}$ and $30 \mathrm{ohm}$ respectively. If the resistances are interchanged, the balance point (in $\mathrm{cm}$) shifts by

In metre bridge experiment, with a standard resistance in the right gap and a resistance coil dipped in water (in a beaker) in the left gap, the balancing length obtained is $1$. If the temperature of water is increased, the new balancing 

In a metrebridge, the balancing length from the left end (standard resistance of one $\mathrm{\Omega }$ is in the right gap) is found to be $20 \mathrm{cm}$. The value of the unknown resistance is 

In a Wheatstone's metrebridge, the null point is obtained at the middle point of the wire. If in one gap the resistance is $10 \mathrm{\Omega }$, then the value of resistance in the other gap is 

Assertion: A slide wire bridge is also called a metre bridge.

Reason: It is because the length of wire in a slide wire bridge is one metre.

Assertion: In a metre bridge, the length of the wire is $1 \mathrm{m}$.

Reason: Greater the length of the wire, the better is the accuracy.