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Q.

A capacitor is connected to a cell of emf E having some internal resistance r. The potential difference across is

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a

Cell is E

b

Capacitor is > E

c

Capacitor is < E

d

Cell is < E

answer is B.

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Detailed Solution

In the given case cell is in open circuit (i = 0) so voltage across the cell is equal to

            its e. m. f

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A capacitor is connected to a cell of emf E having some internal resistance r. The potential difference across is