Wheatstone Bridge

The magnitude of resistance $\mathrm{X}$  in the circuit shown in the given figure, when no current flows through the  $\mathrm{5 }\mathrm{\Omega }$  resistor is

A battery of $6 \mathrm{V}$ is connected to the circuit as shown below. The current $I$ drawn from the battery is

The current $I$ in the given circuit will be

Figure shows an unbalanced Wheatstone bridge. What is the direction of conventional current between $B$ and $D$?

The figure given below shows a network of eight resistors, each equal to $2 \mathrm{\Omega },$ connected to a $3 \mathrm{V}$ battery of negligible internal resistance. The current $I$ in the circuit is 

Find the equivalent resistance between $X$ and $Y$.

The current $I$ drawn from the $5 V$ source will be

The figure shows a circuit diagram of a Wheatstone bridge to measure the resistance $G$ of the galvanometer. The relation $\frac{P}{Q}=\frac{R}{G}$ will be satisfied only when

In the balanced condition, the values of the resistances of the four arms of a Wheatstone bridge are shown in the figure below. The resistance $R_3$ has temperature coefficient $0.0004{{}^{\circ }\mathrm{C}}^{-1}.$ If the temperature of $R_3$ is increased by $100°\mathrm{C},$ the voltage developed between $S$ and $T$ will be $k\times {10}^{-2} \mathrm{V}$. Find the value of $k.$ (Approximate the answer to the nearest integer.)

$AB$ and $CD$ are two uniform resistance wire of lengths $100 \mathrm{cm}$ and $80 \mathrm{cm}$ respectively. The connections are shown in the figure. The cell of emf $5 \mathrm{V}$ is ideal while the other cell of emf $E$ has internal resistance $2 \mathrm{\Omega }.$ A length of $20 \mathrm{cm}$ of wire $CD$ is balanced by $40 \mathrm{cm}$ of wire $AB\mathit{.}$ Find emf in volt, if the reading of the ideal ammeter is $2 \mathrm{A}.$ The other connecting wires have negligible resistance.

The effective resistance between $\mathrm{A}$ and $\mathrm{B}$ is

As shown in the figure below, a cube is formed with ten identical resistance $R$ (thick lines) and two shorting wires (dotted lines) along the arms $AC$ and $BD$.

The resistance between points $A$ and $B$ is

Figure $\left(\mathrm{a}\right)$ below shows a Wheatstone bridge in which $P,Q,R,S$ are fixed resistances, $G$ is a galvanometer and $B$ is a battery. For this particular case, the galvanometer shows zero deflection. Now, only the positions of $B$ and $G$ are interchanged, as shown in figure $\left(\mathrm{b}\right)$. The new deflection of the galvanometer-

Find the equivalent resistance between $X$ and $Y$.

The effective resistance between points P and Q of the electrical circuit as shown in the figure is

 

What is the value of $R$ in Ohms such that the current in the galvanometer is zero?

In the arrangement of resistances shown below, the effective resistance between points $A$ and $B$ is

Find the equivalent resistance between the points $A$ and $B :-$

Five capacitors of $10 \mu \mathrm{F}$ capacity each are connected to a $DC$ potential of $100$ volts as shown in figure. The equivalent capacitance between the points $A$ and $B$ will be equal to :-

On interchanging the position of battery and galvanometer in Wheatstone bridge respectively the new balance point: