what is emf?
and how emf works in a battery cell?
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Explanation:
Electromotive force (EMF) is equal to the terminal potential difference when no current flows. EMF and terminal potential difference (V) are both measured in volts, however they are not the same thing. EMF (ϵ) is the amount of energy (E) provided by the battery to each coulomb of charge (Q) passing through.
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Explanation:
To be precise, the electromotive force (emf) is the potential difference of a source when no current is flowing. Units of emf are volts. ... The voltage across the terminals of a battery, for example, is less than the emf when the battery supplies current, and it declines further as the battery is depleted or loaded down...
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