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When an electric cell drives current through load resistance, its back emf,

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Opposes the original emf

Supports if internal resistance is low

Supports the original emf

opposes if load resistance is large

answer is B.

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Detailed Solution

When an electric cell drives current through load resistance the current will flow from the −ve pole to the +ve pole internally in the cell.

There by generating back emf which is in opposition to the original emf.

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