Question

Insulators have ……………electrons and conductors have …………… electrons.
(a) no free, large number of free
(b) large number of free, no free
(c) no free, small number of free
(d) small number of free, no free

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Answer

(a) no free, large number of free

Reason — Insulators have no free electrons and offer very high resistance and conductors have large number of free electrons and they offer very small resistance to the flow of electrons.

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