The electrolytic bath was filled with a weak solution of sodium chloride and connected to a current source with a sufficiently

The electrolytic bath was filled with a weak solution of sodium chloride and connected to a current source with a sufficiently high internal resistance. Will the voltage at the battery poles increase or decrease if more salt is added to the bath?

Adding salt will increase the amount of charges, which will increase the current. Ohm’s law:
U = E- Ir with increasing current strength, the voltage at the poles of the source will decrease

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