GENERAL KNOWLEDGE

Detailed explanation-1: -This electric force exerted between two oppositely charged objects or two like charged objects is a force in the same sense that friction, tension, gravity and air resistance are forces.

Detailed explanation-2: -The electric force between charged bodies at rest is conventionally called electrostatic force or Coulomb force. Although the law was known earlier, it was first published in 1785 by French physicist Charles-Augustin de Coulomb, hence the name.

Detailed explanation-3: -The answer is no. The two charges will induce some charges on the metal plate. This will of course change the electric field, but according to the principle of superposition, the force on one charge due to another charge is not affected by the presence of other charges (i.e., the charges on the metal plate) near it.

Detailed explanation-4: -The electric force between motionless charged substances is generally known as the electrostatic force. This is also known as Columb’s force.

Detailed explanation-5: -Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges. The size of the force varies inversely as the square of the distance between the two charges.