In an electrolyte solution, current is maintained by the flow of:

electrons only

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negative ions only

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positive ions only

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negative and positive ions both.

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Solution

The correct option is D negative and positive ions both.
Answer is D.
A electrolytic solution allows the flow of ions to maintain a balance in charge between the oxidation and reduction vessels while keeping the contents of each separate. With the charge difference balanced, electrons can flow once again, and the reduction and oxidation reactions can proceed.
Hence, in an electrolyte solution, current is maintained by the flow of both negative and positive ions.

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