In an impressed current system, to which terminal are the anodes connected?

In an impressed current cathodic protection system, anodes are specifically connected to the positive terminal of the power supply to enhance the efficiency of the system. The positive connection to the anodes allows the current to be delivered from the anode to the cathodic structure, which is typically the one being protected. This current flow helps to mitigate corrosion by ensuring that the structure itself achieves a negative electrical potential, effectively serving to protect it from corrosion.

The fundamental principle of this arrangement centers on the movement of electrons; the anodes, when connected to the positive terminal, oxidize and release electrons, which are then attracted to the cathode (the structure being protected). Thus, this configuration is critical to the function of the impressed current system, enabling it to provide the necessary protective current to prevent corrosion effectively.

The other options may describe different configurations or concepts but do not accurately reflect the specific operational dynamics of impressed current systems.