When a charged object interacts with another charged object or a neutral object, it exerts a non-contact force called an electric force. This force is one of the four fundamental forces of nature and plays a crucial role in the behavior and interactions of charged particles and objects. The electric force can be attractive or repulsive, depending on the charges of the interacting objects.

Key Points about Electric Force:

1. Charged Objects: An electric force is exerted by a charged object on another charged object or on a neutral object.

2. Attractive and Repulsive Forces:

- Between opposite charges (+ and -): The electric force is attractive.

- Between like charges (+ and +, - and -): The electric force is repulsive.

3. Coulomb's Law: The magnitude of the electric force between two point charges (small, spherical, charged objects) is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them. It is given by the equation:

```

F = k * (q₁ * q₂) / r²

```

where:

- F is the electric force in newtons (N).

- k is the electrostatic constant (approximately 8.988 × 10^9 N m²/C²).

- q₁ and q₂ are the magnitudes of the charges in coulombs (C).

- r is the distance between the charges in meters (m).

4. Direction of the Force: The direction of the electric force is along the line connecting the centers of the two charges. For attractive forces, it is towards each other, and for repulsive forces, it is away from each other.

5. Superposition Principle: If multiple charged objects interact simultaneously with a specific object, the net electric force on that object is the vector sum of the individual electric forces exerted by each charged object.

6. Fundamental Property of Matter: The electric force is a fundamental property of matter due to the presence of electric charges. It plays a central role in determining the interactions and behavior of charged particles, atoms, molecules, and macroscopic objects.

In summary, a charged object exerts an electric force on another object due to the presence of electric charges. This force can be attractive or repulsive and affects both charged and neutral objects. The strength and direction of the force are determined by the magnitudes and signs of the charges involved, as well as the distance between the objects.