Electrolysis Practice Exam

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In electrolysis, what effect does deeper insertion have on the flow of current?

  1. Increases impedance

  2. Decreases current flow

  3. Increases the flow of current

  4. Has no effect

The correct answer is: Increases the flow of current

Deeper insertion of electrodes during electrolysis generally increases the contact area with the electrolytic solution, which can enhance the flow of current. This occurs because increasing the surface area allows for more effective ion movement between the electrodes and the solution. When electrodes are inserted deeper, the amount of available pathways for charge carriers to travel increases, thereby reducing resistance in the electrolytic cell and allowing for a higher current flow. In contrast, shallower insertion may limit the active area for the electrochemical reactions taking place, potentially leading to increased impedance and decreased current flow. Thus, the deeper the electrodes are inserted, the more effective the electrolysis process becomes, leading to a greater current flow.

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