Question: A repulsive force exists between which two particles?
A repulsive force exists between two particles that have the same electric charge. This is because electric charges of the same sign repel each other, while charges of opposite sign attract each other. The strength of the repulsive force depends on the magnitude of the charges and the distance between them. The repulsive force is described by Coulomb's law, which states that the force is proportional to the product of the charges and inversely proportional to the square of the distance.
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