What is a Wheatstone Bridge?

A Wheatstone bridge is an electrical circuit wherein an unknown electrical resistance can be measured by means of two different portions belonging to a bridge circuit.

What is Wheatstone Bridge?

Wheatstone bridge, otherwise called resistance bridge, assists in the calculation of unknown resistance with the help of balancing two legs of the bridge circuit. Out of both, one leg comprises the component of unknown resistance. Wheatstone bridge basically works on the principle of null deflection, which can be expressed as the ratio of their resistances being equivalent with no current flows through the circuit.

Applications of Wheatstone Bridge

Some of the applications of Wheatstone Bridge include:

Wheatstone bridge is often used for the measurement of very low resistance values with accuracy.
Wheatstone bridge, alongside being an operational amplifier, is also utilised to gauge physical parameters, such as, temperature, strain, light, and more.
Wheatstone bridge also helps in the estimation of quantities of capacitance, inductance and impedance using the variations.

Related Questions of Wheatstone Bridge

Read Also:

Important Topics of Wheatstone Bridge
Power Of Alternating Current	Resistivity Temperature Dependence	Voltage
Current density	Unit of Current	Resistor Colour Codes
Internal resistance formula	Difference between kva and kw	Electrical Formula
Ohm’s law	Ohm’s Law and its Limitations	Combination of Resistors
Carbon Resistor	Difference between air conditioning and refrigeration	Unit of Specific Resistance
Resistance Formula	Relation between kva and kw	Power transformers
Electric Dipole	Cells, emf, Internal Resistance	Permittivity And Permeability
Types of Current	Wheatstone Bridge	Derivation of Drift Velocity
Difference between AC and DC	Relation between resistance and length	Electromotive Force
Current Electricity	Difference between RTD and thermocouple	Difference Between Primary Cell and Secondary Cell
Current density formula	Differences Between Acceleration and Velocity	Types of Resistors
Static Electricity	Ampere	Resistivity formula
Drift Velocity	Relation between power and resistance	Cells in Series and in Parallel
Conductivity	Difference between emf and voltage	Current Density
Potentiometer	Difference between earth and neutral	Uses of Resistor

CBSE CLASS XII Related Questions

1.
Consider a cylindrical conductor of length $ l $ and area of cross-section $ A $. Current $ I $ is maintained in the conductor and electrons drift with velocity $ \vec{v}_d \, (|\vec{v}_d| = \frac{eE}{m} \tau) $, where symbols have their usual meanings. Show that the conductivity of the material of the conductor is given by \[ \sigma = \frac{n e^2 \tau}{m}. \]

View Solution

2.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

View Solution

3.
The resistance of a metal wire at $ 20^\circ \text{C} $ is $ 1.05 \, \Omega $ and at $ 100^\circ \text{C} $ is $ 1.38 \, \Omega $. Determine the temperature coefficient of resistivity of this metal.

View Solution

4.
A charged particle $+q$ in an electric field $\vec{E}$ experiences a force in the direction of the electric field. As a result, its kinetic energy changes. Similarly, the charged particle also experiences a force when it moves in a magnetic field $\vec{B}$. But this magnetic force is perpendicular to both velocity $\vec{v}$ of the charged particle and the magnetic field $\vec{B}$, so it cannot change the kinetic energy of the charged particle. Consider two charged particles 1 and 2 of masses $m$ and $\frac{m}{2}$ having charges $-q$ and $+2q$ respectively. They are accelerated from rest through the same potential difference $V$ and acquire kinetic energy $K_1$ and $K_2$. Then they enter in a region of uniform magnetic field $\vec{B}$ perpendicular to their velocities.

5.
Read the following paragraph and answer the questions that follow.
In an experiment with convex lens of focal length f, the screen is fixed at a distance D from the object. A student slowly moves the lens away from the object towards the screen and finds that she is able to form sharp image of the object for two positions of the lens. The distance between these two positions of the lens is d.

6.
An astronomical telescope consists of two converging lenses. One of them of large aperture and large focal length is called objective lens and the other one, of smaller focal length and smaller aperture is called the eyepiece. It is used to see distant objects which are not seen clearly with naked eyes. The image formed by the objective lens acts as an object for the eyepiece and the final image produced by the eyepiece is magnified.

What is a Wheatstone Bridge?

What is Wheatstone Bridge?

Applications of Wheatstone Bridge

Related Questions of Wheatstone Bridge

CBSE CLASS XII Related Questions

2.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

3.
The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

What is a Wheatstone Bridge?

What is Wheatstone Bridge?

Applications of Wheatstone Bridge

Related Questions of Wheatstone Bridge

CBSE CLASS XII Related Questions

2.With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

3. The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

2.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

3.
The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.