everyday science MCQ #50002

A step-up transformer increases:

everyday science MCQ #50002

  1. Question 1

    Q1. A step-up transformer increases:

    • A) Current while decreasing voltage
    • B) Voltage while decreasing current
    • C) Power output above power input
    • D) Frequency of AC supply

    Answer: Voltage while decreasing current

    Explanation: A step-up transformer increases the output voltage above the input voltage by having more turns on the secondary coil than the primary coil. By the principle of conservation of energy, this voltage increase is accompanied by a proportional decrease in current, keeping power approximately constant.