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Question

What is the function of a transformer?

  1. To convert chemical energy to electrical energy
  2. To step up or step down voltage
  3. To convert mechanical energy to electrical energy
  4. To store electrical energy

Answer:

Option B: To step up or step down voltage

Detailed Solution:

The correct answer is “To step up or step down voltage”.

Transformers are used to increase (step up) or decrease (step down) the voltage of alternating current (AC) electricity.