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Attraction & repulsion of atom:
It can be observed, that if two negatively charged bodies are brought together, there is a force of repulsion between them. Similarly if two positively charged bodies are brought together there is a force of repulsion. However, if a positively charged body is brought close to a negatively charged body, they attract each other. Hence:
Like Charges Repel, Unlike Charges Attract.
The force of attraction or repulsion is governed by an inverse square lawUNIT OF CHARGE
The charge on an electron is very small, therefore a more practical unit of charge called a Coulomb, has been chosen:
One Coulomb = 6.29 x 1018 electrons
It is the product of either change in an electric dipole with the distance separating them.
The earth "spins" (rotates) on its axis based on the action of the materials that accreted to form it, and also on any large collisions it might have undergone. Like the one in the
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Active network:- It can be described as a network, which contains one or more than single source of e.m.f. in it.
How comes the word physics?
How do you magnetize metal? You can rub a magnet with the metal in single direction for a bunch of times (the more the better), and that will magnetize it to some degree, but i
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