question:- 1- For the induced electromotive force generated through commutator of 2-pole Works as rectifier 2- Explain the necessity and principle of commutator in DC generator. armature, is it AC or DC. E- In the generator, what relation does the revolving velocity of armature has to induce electromotive force? >

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Coulomb’s Law

Coulomb's law states that the attraction or repulsion force between two charged things is proportional to the product of their charges and inversely proportional to the square of their distance. It has an effect along the line that connects the two-point charges.