A reversible galvanic cell is connected to an external battery. If the EMF of the battery is less than the EMF of the galvanic cell, then the current:

will not pass through the circuit

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will flow from the battery to the galvanic cell

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will flow from the galvanic cell to the battery

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can flow in any direction

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Solution

The correct option is C will flow from the galvanic cell to the battery
If the EMF of a battery is less than the EMF of an electro-chemical cell, then the current will flow from the electro-chemical cell to the battery. As, the current always flows from a higher potential to a lower potential.
Hence, option C is correct.

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