Wheatstone Bridge

The adjoining circuit diagram represents balanced Wheatstone’s bridge, calculate $\mathrm{R}$.

Find the value of resistance $\mathrm{X}$ in the given circuit so that junctions $\mathrm{M}$ and $\mathrm{N}$ are at the same potential.

Calculate the current drawn from the battery in the given network.

Draw circuit diagram of a balanced Wheatstone bridge and obtain the relationship among the resistors used. Write its applications.

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

Obtain the relation $\raisebox{1ex}{${\mathrm{R}}_1$}\!\left/ \!\raisebox{-1ex}{${\mathrm{R}}_2$}\right.=\raisebox{1ex}{${\mathrm{R}}_3$}\!\left/ \!\raisebox{-1ex}{${\mathrm{R}}_4$}\right.$ for a Wheatstone’s bridge. The symbols have their standard meanings.

State the relation among the resistances of the arms of a balanced Wheatstone’s bridge.

Find equivalent resistance between X and Y

In the adjoining circuit, if a conducting wire is connected between points $A$ and $B$, the current in this wire will

In Wheatstone bridge, three resistors $P,Q$ and $R$ are connected in three arms in order and fourth arm is is formed by two resistors ${\mathrm{s}}_1$ and ${\mathrm{s}}_2$ connected in parallel. The condition for bridge to be balanced is $\frac{\mathrm{P}}{\mathrm{Q}}=$

In Wheatstone's bridge, $P=9 \mathrm{ohm}$, $Q=11 \mathrm{ohm}$, $R=4 \mathrm{ohm}$ and $S=6 \mathrm{ohm}$. How much resistance must be put in parallel to resistance $S$ to balance the bridge?

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

 

In a Wheatstone bridge, $P=90 \mathrm{\Omega }, Q=110 \mathrm{\Omega }, R=40 \mathrm{\Omega }$ and $S=60 \Omega$ and a cell of $4 V$ e.m.f., then the potential difference between the diagonal along which a galvanometer is connected is

In the circuit given, the current relation to a balanced Wheatstone's bridge is: