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

The voltage sensitivity of a galvanometer is given by-

Sensitivity is expressed in 

Amount of deflection of the galvanometer depends on _____.

When the bridge is balanced, what is the current flowing through the galvanometer?

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

$AB$ 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

 

Five equal resistors, each of $5 \mathrm{\Omega }$ are connected in a network as shown in the following figure, then equivalent resistance between $P$ and $Q$ is 

Five equal resistances each of resistance $R$ are connected as shown in the Figure. $A$ battery of voltage $V$ is connected between $A$ and $B.$ The current flowing in $AFCEB$ will be

Resistivity of wire $AB$ is given by $\rho ={\rho }_0\left(1-\frac{\mathrm{x}}{\ell }\right)$ where $(AB=\ell )$ and $x$ is measured from end $B.$. If balancing length is $\frac{2\ell }{3}$ from end $A,$ find $x.$

In a Wheatstone's bridge all the four arms have equal resistance $R\mathit{.}$ If the resistance of the galvanometer arm is also $R,$ the equivalent resistance of the combination as seen by the battery is

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