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What is the primary function of a converter in an electrical circuit?

  1. Changes AC to DC

  2. Converts AC voltage levels

  3. Regulates the current flow

  4. Changes DC to AC

The correct answer is: Changes AC to DC

The primary function of a converter in an electrical circuit is to change AC (Alternating Current) to DC (Direct Current). This is important because many devices and appliances operate on DC power, so a converter is needed to convert the AC power from the mains supply into DC power that can be utilized by these devices. Option B, converting AC voltage levels, is not the primary function of a converter; rather, that would be the function of a transformer. Option C, regulating the current flow, is not the primary function of a converter either; while some converters may have current regulation capabilities, changing AC to DC is the main function. Option D, changing DC to AC, describes the function of an inverter, not a converter.