MDCAT Physics MCQ #65

A power transmission line uses AC instead of DC. Which factor primarily supports this choice?

MDCAT Physics MCQ #65

  1. Question 1

    Q1. A power transmission line uses AC instead of DC. Which factor primarily supports this choice?

    • A) AC can be stepped up to reduce current and power loss.
    • B) AC generates less electromagnetic interference.
    • C) AC avoids the skin effect in conductors.
    • D) AC is safer for household appliances.

    Answer: AC can be stepped up to reduce current and power loss.

    Explanation: Stepping up AC reduces I²R losses. C is incorrect because skin effect occurs in both AC and DC.