Meter Bridge

In a meter bridge balance point is found at a distance  $l_1$  with resistances R and S as shown in the figure.



When an unknown resistance X is connected in parallel with the resistance S, the balance point shifts to a distance $l_2$ . Find the expression for X in terms of  $l_1$ ,  $l_2$  and S.

$AB$ is a uniform wire of meter bridge, across which an ideal $20 \mathrm{volt}$ cell is connected as shown. Two resistor of $1 \mathrm{\Omega }$ and $X \mathrm{\Omega }$ are inserted in slots of metre bridge. A cell of emf $E \mathrm{volts}$ and internal resistance $r \mathrm{\Omega }$ and a galvanometer is connected to jockey $J$ as shown.

If $E=16 \mathrm{volts}$, $r= 4 \mathrm{\Omega }$ and the distance of balance point $P$ from end $A$ is $90 \mathrm{cm}$, then the value of $X$ is

Why it's said to not slide the jockey in the meter bridge?

A wire of uniform cross-section is bent in the shape of a complete ring. Two diametrically opposite points on the wire are connected to the two terminals of left gap of a metrebridge. The resistance of $15 \mathrm{\Omega }$ is connected in the right gap. If the null point is obtained at $70 \mathrm{cm}$ from the left end of the bridge wire, find the resistance of the wire (in $\mathrm{\Omega }$) before bending it to a ring. 

When a metal conductor connected to the left gap of a metre bridge is heated, the balance point

In the given circuit wire $AB$ is of uniform resistance. On closing switch $2$ with other two switches open, the balance length $AJ$ is $L_{\mathit{1}}$. On closing all the switches, the balance length $A{J}_1$ is $L_2$. The internal resistance of the battery $V$ is $nR \mathrm{\Omega }$. Find $n$
$\left(\frac{{\mathit{L}}_{\mathit{1}}}{\mathit{ }{\mathit{L}}_{\mathit{2}}}=3\right)$

In the given figure of meter bridge experiment, the balancing length $AC$ corresponding to null deflection of the galvanometer is $40 \mathrm{cm}$. The balancing length, if the radius of the wire $AB$ is doubled, will be _____ $\mathrm{cm}$.

In meter bridge experiment for measuring unknown resistance '$S$', the null point is obtained at a distance $30 \mathrm{cm}$ from the left side as shown at point $D$. If $R$ is $5.6 \mathrm{k\Omega }$, then the value of unknown resistance '$S$' will be _____ $\mathrm{\Omega }$.

Resistance are connected in a meter bridge circuit as shown in the figure. The balancing length $l_1$ is $40 \mathrm{cm}$. Now an unknown resistance $x$ is connected in series with $P$ and new balancing length is found to be $80 \mathrm{cm}$ measured from the same end. Then the value of $x$ will be _____ $\mathrm{\Omega }$.

Consider part of meter bridge experiment. When resistances in the two gaps are $R_1$ and $R_2$, then balancing length from end $A$ is $30 \mathrm{cm}$. Now $10 \mathrm{\Omega }$ resistances are added in both gaps then balancing length become $40 \mathrm{cm}$. Calculate

1. $\frac{R_1}{R_2}$

2. Value of $R_2$ and $R_1$

In a meter bridge the point $D$ is neutral point as shown in the figure.

How do you find the resistance of a wire using a meter bridge?

What is balance point in Kelvin's method of determination of galvanometer resistance Shaalaa?

What is the use of Kelvin's method?

What is the use of Kelvin's method?

What are the applications of meter bridge

Why meter bridge is not suitable?

What is meter bridge?

What are the limitation of Metre bridge?

What is meter bridge made of?