Electrostatics Homework Help


What is Electrostatics? Explain with examples.

Electrostatics is a subset of physics that assigns the occurrence and features of static or electric charges of slow-moving. So we can say Electrostatics is the study of electromagnetic events that takes place when there are no moving or slow moving charges- i.e., after a fixed balance has been confirmed. Charges gain their balanced situation quickly, since the electric force is highly strong.

Electrostatic event get up from the forces that electric charges apply on each other and are defined by Coulomb's law.


Causes of electrostatic:

When positive and negative charges aren't stabilized(equivalent) then Static electricity is generated. Electrons love to jump all over the place while protons and neutrons don't move much all over!. It produces a negative charge if an object (or a person) contains more electrons.


Examples of Electrostatics: 

  • The attraction force of the plastic cover to one's hand and later when the hand is eliminated from the cover.
  • The affection of paper to a charged scale by stroke to hair.
  • The possibly casual access of grain storehouse.
  • Photocopier & laser printer operations are the best examples of electrostatics.


Main uses of electrostatics:

This section encloses just some of the many electrostatics applications.

  • Electrostatics is used in the Van de Graaff Generator
  • Electrostatics are widely used in Xerography and Laser Printers 
  • Electrostatics are used in Ink Jet Printers and Electrostatic Painting. 
  • Electrostatics are used in Smoke presumption and Electrostatic Air Cleaning.


Laws of electrostatics:

There are main 3 laws of electrostatics. These are as follows:

The 3 laws of electric charges are 1. charges repel2. unlike charges attract  3. charged objects can be attracted to inactive objects. This refers that two objects with the alike(similar) charge impelling apart from each other, while two objects with reverse charges drag towards each other.


What are some electrostatic force examples?

Electrostatic seems to be referring to quiet charges but in fact, is referring to any field related to charge positioning, electric fields make similar charges to reject among them while those of different sign attract between them, those are the electrostatic forces.

An Electrostatic Force is the force between two electric loads.

F = Load1 * Load2 / d² , d = distance of the two loads

This formula is interesting because it equals a formula for the attraction of masses from Newton: F = m1 * m2 / d² …


What is the application of electrostatics?

In combination with magnetostatics, you can explain a lot. Electrostatics alone is a bit more limited in its applications.

Standard circuit theory is based on electrostatic approximation. We assume voltage is constant throughout a conductor. That is only true for statics. We have to modify circuit theory to account for high-frequency waves. This modification is usually taught in a microwave engineering class.

We can much more easily analyze electromagnetic structures if we approximate them as an electrostatic problem. This is usually accurate to do if the dimensions of the structure are much less than the wavelength. Transmission lines are often analyzed this way.

The classic application at the conclusion of an electrostatics discussion is deriving the resistance and capacitance of various structures.

Electric fields put forces on charges. This is used in vacuum tubes to steer the electron beam.


What is the nature of an electrostatic force?

  1. The electrostatic force is generated by static charges.
  2. The electrostatic force between point-like stationary charges is according to Coulomb's law.
  3. The electrostatic force between like charges is repulsive, whereas it is attractive between, unlike charges.
  4. The electrostatic force - field is conservative.
  5. If E is the strength of the electrostatic force - field then Curl E= 0.
  6. We can define potential in the electrostatic force field.
  7. We have Gauss' law in an electrostatic force field.
  8. We have Laplace's and Poisson's equations to obtain the potential in the field.


What is electrostatic induction?

The process of redistribution of charge in a body due to the presence of a charged body placed close to it is known as electrostatic induction.


Which derivations are important from electrostatics?

  1. Electric field due to dipole at axial and equatorial line.
  2. Torque experience and work done by torque in a uniform electric field.
  3. Gauss law derivation
  4. Derivation of coloumb law from gauss law
  5. Derivation of an electric field by metal wire(line charge), uniform charge spherical shell, uniformly charged plane sheet Through gauss law.
  6. Electric field by uniform charged ring
  7. Electric field by a dipole at any point
  8. The electric potential at a point due to electric dipole
  9. The electric potential at a point is due to the point charge.
  10. An electric potential of a dipole in an uniform electric field.
  11. Expression for the capacitance of parallel plate capacitor.
  12. Energy is stored in a capacitor.
  13. Capacitance by inserting dielectric slab in a parallel plate capacitor

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