Electrical Force

Electric Force

Definition:

The repulsive or attractive interaction between any two charged bodies is called as an electric force. Similar to any force, its impact and effects on the given body are described by Newton’s laws of motion. The electric force is among the list of other forces that exert over objects. Newton’s laws are applicable to analyze the motion under the influence of that kind of force or combination of forces. The analysis begins by the construction of a free body image wherein the direction and type of the individual forces are shown by the vector to calculate the resultant sum which is called as the net force that can be applied to determine the body’s acceleration.

Electric Force

What does the size of the electric force depend on?

The electric force between two electrons is equal to the electric force between two protons when placed at equal distances. This describes that the electric force is not based on the mass of the object, but depends on the quantity known as the electric charge.

What is a Magnetic Force?

The magnetic force is the force of repulsion or attraction that activates between electrically charged particles due to their motion. This force is responsible for the attraction of magnets towards iron.

Coulomb’s Law:

According to Coulomb’s law, the value of the electrostatic force of interaction between two point charges is directly proportional to the scalar multiplication of the charges and inversely proportional to the square of the distance among them. Electric force formula can be obtained from Coulomb’s law as follows:

\(\underset{F}{\rightarrow}=K\frac{q_{0}q_{1}}{r^{2}}\hat{r}\)

Where,

  • \(\underset{F}{\rightarrow}\) is the electric force directed between two charged bodies
  • K is the constant of proportionality
  • q0 and q1 are the amounts of charge on each body
  • r is the distance between the charged bodies
  • \(\hat{r}\) is the variable unit vector

Electrical Force Examples:

The examples of electric force are as mentioned below:

  • The charge in a bulb.
  • Electric circuits.
  • Static friction between cloth when rubbed by a dryer.
  • The shock that is felt after touching a doorknob.

The electric force can also be viewed through current electricity like copper wiring that carries power to the whole building. The electrostatic force exhibits electric energy through static charges like cathode-ray tubes in TVs and electrostatic spray painting.

Stay tuned with BYJU’S to know more about examples of magnetic force examples along with Coulomb’s law examples.


Practise This Question

In a diving event of Olympics, one participant jumped from a plank 100m above the level of the swimming pool; before diving she tossed herself 5m up in the air, streamlined her body,performed 2 flips and dived right in the pool. What is the distance(d) and displacement (s) travelled by her till the point she hits the pool?