WBCS.LIVE practice question

Which quantity is increased in step-down transformer?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. Voltage
  2. Current
  3. Wattage
  4. Frequency

Correct answer and explanation

Correct answer: Current

Explanation: āœ… Correct Answer: B. Current šŸ“š Explanation: A step-down transformer is designed to decrease the voltage of an electric current. According to the principle of conservation of energy, if the voltage is decreased, the current must increase in the same proportion. This process ensures that the total power remains relatively constant (ignoring minor efficiency losses). Step-down transformers are commonly used in households to convert high-voltage line power into safer levels.