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NEET UG 2026 » NEET UG Study Material » Physics » Electric Force
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Electric Force

This article includes topics such as electric force, electric resistance force equation and electric force uses.

Table of Content
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The electrostatic force exists between two charged particles and acts as an attraction or repulsion force. Coulomb’s interaction, or Coulomb’s force, is another name for it. The electrostatic force between protons and electrons in an atom, for example, is what keeps the atom stable. Because it links an ionic molecule, the electrostatic bonding force is important in chemistry.

Electricity

“Electricity” is derived from the Greek word “Elektron,” which means “amber.” Materials, atoms, and molecules have magnetic and electric forces that influence their properties. There are only two types of entities that are referred to as “electric charge.” An experiment revealed two types of electrification: the first involves like charges repelling each other, and the second involves unlike charges attracting each other. The polarity of charge is the defining characteristic of these two types of charges.

The transport of electric charge is aided by conductors, but not by insulators, according to an experiment on electric charges generated by frictional electricity. Metals, the Earth, and human bodies are all conductors, but porcelain, nylon, and wood are all insulators, preventing electricity from flowing through them.

Electric field

An electric field is a region of space around an electrically charged particle or object where the charge feels forced. The electric field may be examined by putting another charge into it, which exists everywhere in space.

For practical purposes, the electric field can be approximated as 0 if the charges are far enough away. Electric fields are represented by arrows pointing toward or away from charges as a vector quantity. The lines must either point radially outward, away from a positive charge, or inside, toward a negative charge.

The magnitude of the electric field is computed using the formula:

E=F/q

where E denotes the strength of the electric field, F denotes the electric force, and q denotes the test charge.

Electric field lines properties

  • Electric field lines are continuous curves.
  • They have a positively charged body at the start and a negatively charged body at the finish.
  • Being tangent to the electric field line determines the direction of electric field strength at any place.
  • There are no crossovers between electric field lines.
  • The conductor’s surface is always parallel to the electric field lines.

Electrical force 

An electric force is the interaction of two charged objects that is either repulsive or attractive. Newton’s equations of motion, like any other force, define the impact and effects of any force on a specific body. The electric force is just one of the many forces that act on objects.

Newton’s laws can be used to investigate motion caused by a specific force or group of forces. The analysis begins with the production of a free body diagram in which the vector indicates the direction and type of individual forces such that the resultant sum, known as the net force, may be used to compute the body’s acceleration. An electric force is the interaction of two charged objects that is either repulsive or attractive. Newton’s equations of motion, like any other force, define the impact and effects of any force on a specific body. The electric force is just one of the many forces that act on objects.

Newton’s laws can be used to investigate motion caused by a specific force or group of forces. The analysis begins with the production of a free body diagram in which the vector indicates the direction and type of individual forces such that the resultant sum, known as the net force, may be used to compute the body’s acceleration.

Coulomb’s law

Coulomb’s law is an analytical law that determines the amount of force that exists between two stationary electrically charged particles. The electrostatic force, commonly known as Coulomb’s force, is an electric force that exists between two charged bodies that are stationary. Coulomb’s law describes the amount of electrostatic force between stationary charges. The force acting along a line connecting two-point charges is proportional to their product and divided by the square of the space between them.

Examples of electric force

Some instances of these forces are as follows:

  • When human hairs are rubbed on a balloon and it is brought close to another balloon, the two begin to stay together.
  • A silk or cotton cloth instantly adheres to the body after being ironed.
  • Electrostatic force can also cause lightning.

Current electricity, such as copper wiring that transports power throughout the building, can also be used to observe the electric force. Static charges, such as cathode-ray tubes in televisions and electrostatic spray painting, are examples of the electrostatic force.

Electric force uses

The following are some examples of how Coulomb’s Force is used:

  •  To perform illusions
  • Photocopiers 
  • Electrostatic air filters 
  • Ink-jet and laser printers 

Conclusion

The electrostatic force between two charged particles can be calculated using Coulomb’s law. It connects the electrostatic force, charge magnitude, and separation distance, and is most typically employed with point charges. According to this rule, the force between the two particles is,

  • Charges are directly proportional to the product of their magnitudes.
  • The square of the distance between the two charges is inversely proportional to the distance between the two charges.
faq

Frequently asked questions

Get answers to the most common queries related to the Neet Examination Preparation.

What do you mean by electricity?

Ans :The flow of electrons through a conductor is known as electricity.

What do you mean by voltage?

Ans : Voltage is the pressure created by an associated electrical power supply pushing electrons through a ...Read full

What are the basic components of an electric circuit?

Ans :The basic components of an electric circuit are: (i) Load, (ii) Power Supply, (iii) Switch and (i...Read full

state 3 properties of an electric circuit.

Ans :The following are the basic properties of an electric circuit: A closed path is always pres...Read full

How many wires are required for a household wiring?

Ans :For a household wiring, a minimum of 3 wires are required that are: i) Live, ii) Neutral and iii) Ground....Read full

Ans :The flow of electrons through a conductor is known as electricity.

Ans : Voltage is the pressure created by an associated electrical power supply pushing electrons through a conductor in an endless loop.

Ans :The basic components of an electric circuit are:

(i) Load, (ii) Power Supply, (iii) Switch and (iv) wires.

Ans :The following are the basic properties of an electric circuit:

  • A closed path is always present in an electric circuit.
  • At least one power supply provides the flow of electrons in an electric circuit.
  • The electric elements include resistors, capacitors, inductors, and other energy sources that can be controlled or uncontrolled.

 

Ans :For a household wiring, a minimum of 3 wires are required that are: i) Live, ii) Neutral and iii) Ground.

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