Equivalent resistance between point $A$ and $B$ is $\frac{73}{n} \Omega$. Then value of $n$ is

 

When the value of $R$ in the balanced Wheatstone bridge, shown in the figure, is increased from $5 \mathrm{\Omega }$ to $7 \mathrm{\Omega }$, the value of $S$ has to be increased by $3 \mathrm{\Omega }$ in order to maintain the balance. What are the initial values of $S?$

In the given circuit, it is observed that the current $I$ is independent of the value of resistance $R_5$. Then, the resistance value must satisfy

A non-zero current passes through the galvanometer $G$ shown in the circuit when the key $K$ is closed and its value does not change when the key is opened. Then, which of the following statement(s) is/are true?

In the circuit given below, it is observed that the current $I$ is independent of the value of resistance $r_6$. Then the resistance values satisfy

The value of current ${\mathrm{i}}_1$ flowing from $\mathrm{A}$ to $\mathrm{C}$ in the circuit diagram is :

he equivalent resistance of the circuit between $A$ and $B$ is

The value of current $I$ as shown in the given circuit diagram is

Obtain the balancing condition for the Wheatstone bridge arrangement as shown in Figure below$:$

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 $0.0004°{\mathrm{C}}^{-1}$. If the temperature of $R_3$ is increased by $100°\mathrm{C},$ the voltage developed between $S$ and $T$ will be $n \mathrm{V}$. Write the value of $100n$ to the nearest integer.

In the circuit shown $P\ne R$, the reading of the galvanometer is same with switch $S$ open or closed, then

Calculate the equivalent resistance between points  $\mathrm{A} \mathrm{and} \mathrm{C}$ of the following circuit

In the circuit shown in the figure all the resistance are identical and each has the value $r \mathrm{\Omega }.$ The equivalent resistance of the combination between the points $A$ and $B$ will remain unchanged even when the following pairs of points marked in the figure are connected through a resistance $R.$

Calculate the value of unknown resistance $\mathrm{R}$ in given circuit. If wheatstone bridge is in balanced condition.