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A transformer operates on the principle of electromagnetic induction. What is th

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Question: A transformer operates on the principle of electromagnetic induction. What is the main purpose of a transformer?

Options:

  1. To increase or decrease voltage
  2. To store electrical energy
  3. To convert AC to DC
  4. To measure current

Correct Answer: To increase or decrease voltage

Solution: 

A transformer is used to increase or decrease the voltage in an AC circuit based on the turns ratio of its coils.

A transformer operates on the principle of electromagnetic induction. What is th

Practice Questions

Q1
A transformer operates on the principle of electromagnetic induction. What is the main purpose of a transformer?
  1. To increase or decrease voltage
  2. To store electrical energy
  3. To convert AC to DC
  4. To measure current

Questions & Step-by-Step Solutions

A transformer operates on the principle of electromagnetic induction. What is the main purpose of a transformer?
  • Step 1: Understand that a transformer is a device used in electrical circuits.
  • Step 2: Know that it works based on a principle called electromagnetic induction.
  • Step 3: Learn that the main purpose of a transformer is to change voltage levels.
  • Step 4: Recognize that it can either increase (step-up) or decrease (step-down) the voltage.
  • Step 5: Understand that this change in voltage depends on the number of coils (turns) in the transformer.
  • Electromagnetic Induction – Transformers operate on the principle of electromagnetic induction, where a changing magnetic field induces voltage in a coil.
  • Voltage Transformation – The main purpose of a transformer is to increase or decrease voltage levels in an AC circuit based on the turns ratio of its coils.
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