Why Do We Prefer A Potentiometer With A Longer Bridge Wire?

A potentiometer with a longer bridge wire is preferred because such a potentiometer has small potential gradient that makes it more sensitive.

Related Questions

Read More:

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

CBSE CLASS XII Related Questions

1.
Two thin lenses of focal length \( f_1 \) and \( f_2 \) are placed in contact with each other coaxially. Prove that the focal length \( f \) of the combination is given by \[ f = \frac{f_1 f_2}{f_1 + f_2}. \]
View Solution
2.
Draw a circuit diagram of a full-wave rectifier using p-n junction diodes. Explain its working and show the input-output waveforms.
View Solution
3.
Two parallel plate capacitors X and Y are connected in series to a 6 V battery. They have the same plate area and same plate separation but capacitor X has air between its plates, whereas capacitor Y contains a material of dielectric constant 4. Calculate the capacitances of X and Y, if the equivalent capacitance of the combination of X and Y is \( 4 \, \mu\text{F} \). Calculate the potential difference across the plates of X and Y.
View Solution
4.
Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:
- attract with a force \( \frac{F}{2} \)
- repel with a force \( \frac{F}{2} \)
- repel with a force \( F \)
- attract with a force \( F \)
View Solution
5.
Write any two features of nuclear forces.
View Solution
6.
Write the expression for the magnetic field due to a current element in vector form. Consider a 1 cm segment of a wire, centered at the origin, carrying a current of 10 A in positive x-direction. Calculate the magnetic field \( \mathbf{B} \) at a point \( (1 \, \text{m}, 1 \, \text{m}, 0) \).
View Solution

Similar Physics Concepts

Meter Bridge: Definition, Working Principle & Examples

Potentiometer: Working Principle, Types & Applications

Ohm's Law and Its Limitations: Explanation & Applications

Cells, EMF and Internal Resistance: Equations & Examples

Combination of Cells in Series and in Parallel

Electric Current: Effects, Types and Properties

Wheatstone Bridge: Derivation, Formula & Applications

Resistors in Series and Parallel Combination: Formula and Examples

Current Electricity: Definition, Types, Formulas & SI Units

Ampere: Definition, Conversions and Ammeter

CBSE CLASS XII Previous Year Papers

Physics

Physics Preparation Guides

Electric Charges and Fields: Flux, Gauss Law & Coulomb's Law

Applications of Gauss Law: Formula & Gauss Theorem

Coulomb’s Law: Formula, Vector Form & Limitations

Electric Charge: Definition, Formula, Types and Properties

Electric Field: Definition, Formula & Electric Field Direction

Gauss Law: Formula, Gauss Theorem & Electric Flux

Dipole in a Uniform External Field: Torque, Frequency, and Time Period

Electric Dipole: Definition, Significance and Electric Dipole Moment

Electric Flux: Formula, Equation, Symbol & SI Unit

Electrostatic Potential: Definition, Formula and SI Unit

Electric Potential Due to a Point Charge: Derivation & Formula

Potential Due to an Electric Dipole: Introduction, Formula and Derivation

Equipotential Surface: Work Done, Properties & Magnitude

Van de Graaff Generator: Principle, Working, and Construction

Energy Stored in a Capacitor: Formula, Derivation and Applications

Electrostatic Potential and Capacitance: Introduction & Derivations

Electric Charges and Fields Important Questions

Kirchhoff's Laws: Kirchhoff's Current and Voltage Laws & Applications

Meter Bridge: Definition, Working Principle & Examples

Potentiometer: Working Principle, Types & Applications

Physics NCERT Solutions

Doppler Shift: Formula & Applications

Volcanoes Eruption: Definition, Formation and Causes

Alpha-Particle Scattering and Rutherford’s Nuclear Model of Atom: Explanation

Tension Formula: Explanation and Solved Examples

Pressure Formula: Partial, Osmotic & Absolute Pressure

NCERT Solutions For Class 12 Physics Chapter 1: Electric Charges and Fields

NCERT Solutions For Class 12 Physics Chapter 8: Electromagnetic Waves

NCERT Solutions For Class 12 Physics Chapter 6: Electromagnetic Induction

NCERT Solutions for Class 12 Physics Chapter 13: Nuclei

NCERT Solutions For Chapter 14: Semiconductor Electronics

Comments

No Comments To Show

SUBSCRIBE TO OUR NEWS LETTER

COLLEGE NOTIFICATIONS

EXAM NOTIFICATIONS

NEWS UPDATES

Download the Collegedunia app on

downloadapp_banner image

downloadapp_banner image

© 2026 Collegedunia Web Pvt. Ltd. All Rights Reserved