An electric cell does $5$ joules of work in carrying $10$ Coulomb’s of charge around a closed circuit. The emf of the cell is

2 V

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0.5 V

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4 V

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1 V

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Solution

The correct option is B $0.5 V$
we know work done by all
$W = q V$
$\Rightarrow 5 = 10 \times V$
$\Rightarrow V = 0.5. V$

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