WBCS.LIVE practice question

A transformer works on the principle of which of the following?

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

Answer options

  1. Self-induction
  2. Mutual induction
  3. Static electricity
  4. Magnetic resonance

Correct answer and explanation

Correct answer: Mutual induction

Explanation: āœ… Correct Answer: B) Mutual induction šŸ“š Explanation: A transformer is an electrical device designed to step up or step down alternating current (AC) voltages. It consists of two coils, known as the primary and secondary, wound around a common iron core. When AC flows through the primary coil, it creates a varying magnetic field that induces a voltage in the secondary coil via mutual induction.