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20 August, 12:52

The emf of a battery is equal to its terminal potential difference A) under all conditions B) only when the battery is being charged C) only when a large current is in the battery D) only when there is no current in the battery E) under no conditions

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  1. 20 August, 13:30
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    D. The chemical potential energy of real battery decreases, it develops internal resistance and therefore the potential difference across its terminals decreases if its current increases.
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