Electrostatics – Hub of related Posts

Here goes the list of our posts on Electrostatics and related topics and subtopics.

Numerical problems based on the motion of a charge in a uniform electric field between two parallel plates

In this post, let's solve Numerical problems based on the motion of a charge in a uniform electric field between two parallel plates. In the case of the motion of ...
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Numerical problem based on electric field between charged parallel plates

Here, we will solve a set of Numerical Problems based on the formula of the electric field between two charged parallel plates. Numerical Problem (Physics) - based on the formula ...
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Derive formulas of electric field & potential difference between charged plates

Here we will derive the formulas of electric field & potential difference between charged plates. fundamentals Now, let's see some of the facts we need to know (or revise) first, ...
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Charge distribution in two oppositely charged parallel metal plates

In this post, we will find how the charges are distributed if two parallel metal plates are oppositely charged. We will also know about the Electric field lines between two ...
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No charge on the inner surface of the hollow object when charged – why?

When a hollow conducting object is charged, either negatively or positively, does the charge distribute evenly throughout the inner and outer surfaces of the object? It is witnessed that, excess ...
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There are no electric field lines anywhere inside a hollow conductor – why?

The electric field is zero everywhere inside the hollow conductor, so there are no electric field lines anywhere inside a hollow conductor. This effect (electric field being zero everywhere inside ...
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Rules to follow when you draw electric field lines around a point charge

For many applications, a much simple method is used to represent electric fields. Instead of drawing an infinite number of vector arrows, we can draw lines, called electric field lines, ...
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Dielectric & Dielectric constant (Relative Permittivity)

In this post, we will talk about the Dielectric & Dielectric constant (Relative Permittivity). One way to keep the plates of a capacitor apart is to insert an insulator called ...
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Equipotential lines & surfaces in an electric field

In this post, we will define Equipotential lines and equipotential surfaces in an electric field. Then we will see their significance. Potential gradients for Equipotential lines and equipotential surfaces are ...
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How is electric field strength related to the electric potential gradient?

Here, we will find how electric field strength is related to the electric potential gradient. Before that, we will define the electric potential gradient. Electric potential gradient The electric potential ...
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Electric potential – definition, formula, sample numerical

In this post, we will discuss the following: (1) definition of electric potential, (2) formula of electric potential, (3) solving a sample numerical problem using the formula of electric potential ...
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Electric field lines in uniform and radial electric fields

In this post, we will see how Electric field lines in uniform and radial electric fields differ. An electric field may be represented by a diagram that shows field lines ...
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Permeability & Relative Permeability

In this post, we will discuss Permeability & Relative Permeability with their definition, relationship, equations, formula, the permeability of air, examples, etc. Permeability The ability of a material to conduct ...
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Potential difference (Electrical) worksheet – with solved numerical

Potential difference (Electrical) Worksheet Questions Q1. How much is the work done in moving a charge of 4 C across two points having a potential difference of 24 V? Q2: ...
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Comparison between electric field and magnetic field

A table of the comparisons between the electric field and the magnetic field is shown below. Electric Field Magnetic Field An electric field is caused by charges. But, a magnetic ...
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Torque on an electric dipole – revision notes with definition, & equation (derivation)

Here, we will study the concepts and formula of the torque on an electric dipole. Torque on an electric dipole - how is it generated? Two equal and opposite charges ...
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Identically Charged spheres of the same mass vertically suspended are in equilibrium – derive formulas

Say, two Identically Charged spheres of the same mass are suspended vertically and they got to be in equilibrium. Now, here we will derive the formulas related to this equilibrium ...
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Lami’s theorem to solve numerical problems of electrostatics

Lami's theorem is used to solve numerical problems of electrostatics when electrostatic forces are in equilibrium. To solve some questions of electrostatics, Lami's theorem is very useful. Lami's theorem (when ...
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Examples of static electricity in everyday life & sticking a balloon to the wall

In this post, we will discuss and list down different examples of static electricity in everyday life. Also, we will find how sticking a balloon to the wall is caused ...
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Derive the Formula of Electric Potential Difference from the energy difference in an electric field

In this post, we will see how to derive the Formula of Electric Potential Difference from the concept of energy difference in an electric field. We will derive 2 equations ...
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Electric potential energy – study notes

In this post, we will see how a charge gains or loses Electric potential energy when it moves around in an electric field. We will also derive the equation of ...
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How to determine Relative strength & sign of charges from lines of force

In this post, we will find How to determine the Relative strength & sign of charges from lines of force seen in the drawing or map of the electric field ...
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Electric Field due to a Uniformly Charged Spherical Shell & solid sphere

In this post, we will derive (1) the expression of the Electric Field due to a Uniformly Charged Spherical Shell, and (2) the expression of the Electric Field due to ...
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Electric Field due to a Long Line Charge – formula derivation

A line charge is in the form of a thin charged wire of infinite length with a uniform linear charge density σ (charge per unit length). Let there be a ...
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Electric Field due to a Point Charge – derivation of the formula

Let us apply Gauss’ Law to calculate electric field due to a point charge.Draw a spherical surface of radius r with a point charge at the center of the sphere, ...
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Dipole & Dipole Moment – definition, formula

In this post, we will find out what exactly an electric dipole is. We will also define dipole moment and find out the formula of dipole moment. Dipole | Electric ...
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How static electricity is used in Laser Printer?

Laser printers use static electricity to print documents. Let's see how it is done. Inside the printer, an object called the image drum is given a positive charge. A laser ...
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How to solve Numerical problems based on Coulomb’s Law

In this post, we will solve a few numerical problems using Coulomb's law in a step-by-step approach. Before that, we will quickly revise this law and the equation related to ...
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Gauss’ Law – statement & derivation of equation

Gauss’ law was formulated by the German mathematician and physicist Carl Friedrich Gauss (1777–1855). In presenting Gauss’ law, it will be necessary to introduce a new idea called electric flux ...
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The Millikan Oil-Drop Experiment

Robert Millikan measured e, the magnitude of the elementary charge on an electron, and demonstrated the quantized nature of this charge with the help of a brilliant set of experiments ...
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The Van de Graaff Generator

Let's find out what the Van de Graaff Generator actually is and what principle acts behind it. It's a scientific device based on the principles of electrostatics. Van de Graaff ...
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Static Discharge and Lightning

In this post we will find what static discharge is and how lightning occurs. Also we will answer a few FAQs on static electricity. What is static discharge - can ...
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How does polarisation help charged objects exert force on insulators?

Unlike conductors, the electrons in insulators (non-conductors) are bound to the atoms of the insulator and cannot move around freely through the material. However, a charged object can still exert ...
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[pdf notes] Electrostatics Grade 10 & grade 11 Notes download | physics notes on Electrostatics

This Electrostatics [PDF notes] is primarily for the 10th & 12th grade physics syllabus of different international boards including ICSE, CBSE, etc. We hope, the students appearing for IGCSE, AP Physics, GCSE, ...
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Static Electricity & Charge – Important Questions and Answers

This post is going to cover Static electricity, electrostatic charge, and related topics with important questions and answers. This Q&A set will be helpful for students of different boards including ...
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Electroscope – detect charge and its sign

In this post, we will first see what an electroscope is and then we will discuss: - how an electroscope can help to detect the presence of a charge in ...
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electronvolt – what is electronvolt(eV) and how is eV related to Joule?

The SI unit of energy joule is too large a unit of energy for the microscopic world. A more convenient unit of energy for the microscopic world is the electronvolt, ...
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emf and potential difference Numerical problems

Let's solve 2 numerical problems based on emf and potential difference. Numerical problems based on emf and potential difference 1] If the emf of a battery is 9 V, how ...
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State the difference between emf and potential difference with the energy view

The cell uses chemical energy to place the charges in a position of high potential i.e electrical potential energy is stored in a cell. As the charges flow through the ...
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How to define Voltages, Electromotive Force (emf), and Potential Difference (PD)?

Voltages, Electromotive Force (emf), and Potential Difference (PD) - These 3 terms are often used while we discuss electrical circuits. Hence exactly knowledge about these certainly helps us to understand ...
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How Strong is the Coulomb Force Relative to the Gravitational Force?

How Strong is the Electrostatic or Coulomb Force Relative to the Gravitational Force? To find this we will calculate the electrostatic force and the gravitational force between an electron and ...
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Electric Field – Formula, direction & derivation

A space that causes charged particles to accelerate is said to have an Electric Field. By definition, the electric field (E) at a given point in the space surrounding a ...
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What Is Coulomb’s Law? | Electric force formula, direction

Coulomb’s law gives the electric force acting between two point charges. A point charge is a pointlike object with a nonzero electric charge. Coulomb’s law says that the force between ...
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How to compare Electric Force and Gravity with similarities and differences?

This topic is a comparative study between the Electric force and Gravity. The electric force is related to electric charges and Gravity is applicable between any two masses. Similarities between ...
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Electric Charge, Law of Conservation of Electric Charge and Triboelectric Charging – facts you must know

In this post, we will discuss the concepts of triboelectric charging. Before taking that, we will quickly cover the electric charge, types of charges (positive charge and negative charge), and ...
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