everyday science MCQ #4554

Which of the following devices is used to step up or step down the voltage of alternating current?

everyday science MCQ #4554

  1. Question 1

    Q1. Which of the following devices is used to step up or step down the voltage of alternating current?

    • A) Induction coil
    • B) Transformer
    • C) Transistor
    • D) Rectifier

    Answer: Transformer

    Explanation: A transformer uses electromagnetic induction between two coils to step up or step down alternating current voltages; it only works with AC, not DC.