MDCAT Physics MCQ #71

A transformer with 500 primary turns steps up voltage to 220 V. If the secondary has 10,000 turns, what is the primary’s input voltage?

MDCAT Physics MCQ #71

  1. Question 1

    Q1. A transformer with 500 primary turns steps up voltage to 220 V. If the secondary has 10,000 turns, what is the primary’s input voltage?

    • A) 110 V
    • B) 44 V
    • C) 22 V
    • D) 11 V

    Answer: 11 V

    Explanation: Voltage is proportional to turns; 220 × (500/10,000) = 11 V. A is incorrect because step-up increases voltage.