everyday science MCQ #49455

A step-up transformer has 100 turns in the primary coil and 1,000 turns in the secondary coil. If the primary voltage is 50 V, what is the secondary voltage?

everyday science MCQ #49455

  1. Question 1

    Q1. A step-up transformer has 100 turns in the primary coil and 1,000 turns in the secondary coil. If the primary voltage is 50 V, what is the secondary voltage?

    • A) 5 V
    • B) 50 V
    • C) 100 V
    • D) 500 V

    Answer: 500 V

    Explanation: For a transformer, the voltage ratio equals the turns ratio: Vs/Vp = Ns/Np, so Vs = 50 × (1000/100) = 500 V. Because this output voltage exceeds the input, it is a step-up transformer.