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How conductors and non-conductors are di...

How conductors and non-conductors are different ? Why are they not charged b rubbing them with our hands ?

Text Solution

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1- Those which allow electricity to pass througl them easily are called conductors.
2- They have free electrons to move inside th. material. A
3- E.g. : Metals, human and animal bodies ant earth are conductors.
4- Those which doesn.t allow electricity to pas, through them are called insulators. Most of the non-metals like glass, porcelain plastic, nylon, wood offer high resistance to the passage of electricity through them.
5- When some charge is transferred to a conductor it readily gets distributed over the entire surface of the conductor. In contrast, if some charge ii put on an insulator, it stays at the same place
6- When metal rod is rubbed with hand, no electric charge is obtained because charges on meta leak through our body to Earth.
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Knowledge Check

  • lf a conductor has a potential V ne 0 and there are no charges anywhere else outside, then

    A
    there must be charges on the surface of inside itself
    B
    there cannot be any charge in the body of the conductor.
    C
    there must be charges only on the surface.
    D
    there must be charges inside the surface.
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