The objects with the same charge will interact through repulsive force.
The objects with opposite nature of charges interact through attractive force.
The given problem is based on the nature of charge on the object. A charge is a fundamental characteristics of matter, described by means of presence of electrons and protons. If number of electrons is more, then charge will be negative and if number of protons is more, then charge is positive.
1.
When two or more objects occupy same charge, which means they have same number of extra electrons. In this case, the objects will undergo repulsion and the force between them is known as repulsive force.
Thus, we can say that the objects with the same charge will interact through repulsive force.
2.
Similarly, when two objects carry opposite charges, then one of them may have extra number of electrons and other is having same number of protons. So in this case, the objects will undergo attraction due to attractive force.
Thus, we can conclude that objects with opposite nature of charges interact through attractive force.
Note: - These attractive and repulsive forces are known as Coulomb's forces.
Learn more about the Coulombs forces here:
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