when a charged body is brought close to uncharged body,unlike charge is induced to nearer end of uncharged body. give reson
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The charged would start to attract the uncharged body due to a force called electrostatic force.
This is due to the phenomenon of "Charging by Induction". When a charged body(say negatively charged) is brought near an uncharged one, it induces an opposite charge(positive) on it and hence attracts it towards itself. This can be explained as follows :-
The negatively charged body can be thought to be an electron rich specie. When brought near the uncharged body, it repels the free electrons from the uncharged body towards its farther end. As such, the closer end of the uncharged body now experiences lack of electrons, which is a characteristic of positive charge. Hence, the ends of the two bodies develop opposite charges and mutual attraction occurs.
The same theory applies for a positively charged body which can attract an uncharged one.
Answer :-
Usually the uncharged object actually contains charged particles, of opposite charges, that balance out to a neutral charge overall. Typically this means positively charged protons in the nuclei of the material's atoms which are more or less immovable, and electrons around them which can be added or removed to change the net charge, or shifted around on/in the object (sometimes).
What can often happen when a charged object nears an uncharged one is that the moveable charge of the uncharged object (some of its electrons) can be either repelled and shift to the far side of the object, or attracted and shift to the near side. The overall charge on the object remains neutral, but the part of it closest to the charged object takes on the opposite charge from the one of the charged object and the two objects attract. This can only happen when the uncharged object consists of positively and negatively charged particles whose charges balance out, and some of those particles can move through or over the object.