Wheatstone Bridge
Wheatstone Bridge: Overview
This Topic covers sub-topics such as Wheatstone Bridge, Electrical Instruments, Unbalanced Wheatstone Bridge, Balanced Wheatstone Bridge and, Sensitivity of Wheatstone Bridge
Important Questions on Wheatstone Bridge
The magnitude of resistance in the circuit shown in the given figure, when no current flows through the resistor is

A battery of is connected to the circuit as shown below. The current drawn from the battery is

The current in the given circuit will be

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

The figure given below shows a network of eight resistors, each equal to connected to a battery of negligible internal resistance. The current in the circuit is

Find the equivalent resistance between and .

The current drawn from the source will be

The figure shows a circuit diagram of a Wheatstone bridge to measure the resistance of the galvanometer. The relation 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 has temperature coefficient If the temperature of is increased by the voltage developed between and will be . Find the value of (Approximate the answer to the nearest integer.)

and are two uniform resistance wire of lengths and respectively. The connections are shown in the figure. The cell of emf is ideal while the other cell of emf has internal resistance A length of of wire is balanced by of wire Find emf in volt, if the reading of the ideal ammeter is The other connecting wires have negligible resistance.

The effective resistance between and is

As shown in the figure below, a cube is formed with ten identical resistance (thick lines) and two shorting wires (dotted lines) along the arms and .
The resistance between points and is

Figure below shows a Wheatstone bridge in which are fixed resistances, is a galvanometer and is a battery. For this particular case, the galvanometer shows zero deflection. Now, only the positions of and are interchanged, as shown in figure . The new deflection of the galvanometer-

Find the equivalent resistance between and .

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

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

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

Find the equivalent resistance between the points and

Five capacitors of capacity each are connected to a potential of volts as shown in figure. The equivalent capacitance between the points and will be equal to :-

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