MDCAT Physics MCQ #795

A step-down transformer has 1000 primary turns and 100 secondary turns. If primary voltage is 220 V, what is the secondary voltage?

MDCAT Physics MCQ #795

  1. Question 1

    Q1. A step-down transformer has 1000 primary turns and 100 secondary turns. If primary voltage is 220 V, what is the secondary voltage?

    • A) 2200 V
    • B) 22 V
    • C) 2.2 V
    • D) 220 V

    Answer: 22 V

    Explanation: Vs = Vp × (Ns/Np). Option A reverses turns ratio.