Similar charges have
Similar charges have repulsion. This is due to the fundamental principle in electrostatics that like charges repel each other. Positive charges repel other positive charges, and negative charges repel other negative charges. This repulsive force can be observed in various electrostatic experiments and applications.
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Similar charges have repulsion (option C). This fundamental principle of electrostatics states that like charges repel each other. For instance, if two positively charged objects or two negatively charged objects are brought close to each other, they will experience a force that pushes them apart. This is because similar charges create an electric field that exerts a force on other similar charges, causing them to move away from each other. This repulsive force is described by Coulomb’s Law, which quantifies the magnitude of the force based on the charges’ magnitudes and the distance between them. Attraction (option A) occurs between opposite charges, such as positive and negative. Adhesion (option B) and cohesion (option D) refer to forces that cause molecules to stick together, but are not related to the behavior of electrostatic charges. Therefore, similar charges always exhibit repulsion.