The flow of the electric current through a metallic conductor is:

Only due to electrons

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Only due to +ve charges

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Due to both nuclei and electrons.

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Can not be predicted.

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Solution

The correct option is A Only due to electrons
Protons and neutrons are strongly bound to the atoms (in the nucleus). Only electrons can be free from atoms. The systematic flow of these free electrons constitutes a current. Therefore, the electric current is only due to the flow of electrons.

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