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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 primary function of a transformer?

Options:

  1. To increase voltage
  2. To decrease voltage
  3. To convert AC to DC
  4. To store energy

Correct Answer: To increase voltage

Solution: 

A transformer is designed to increase or decrease the voltage in an AC circuit through electromagnetic induction, depending on the turns ratio of the primary and secondary 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 primary function of a transformer?
  1. To increase voltage
  2. To decrease voltage
  3. To convert AC to DC
  4. To store energy

Questions & Step-by-Step Solutions

A transformer operates on the principle of electromagnetic induction. What is the primary function of a transformer?
  • Step 1: Understand that a transformer is an electrical device.
  • Step 2: Know that it works with alternating current (AC) electricity.
  • Step 3: Learn that a transformer has two coils: the primary coil and the secondary coil.
  • Step 4: Recognize that the primary coil receives the input voltage.
  • Step 5: Understand that the secondary coil delivers the output voltage.
  • Step 6: Realize that the transformer changes the voltage level based on the number of turns in each coil (turns ratio).
  • Step 7: Conclude that the main function of a transformer is to either increase (step-up) or decrease (step-down) the voltage in an AC circuit.
  • Electromagnetic Induction – The process by which a changing magnetic field induces an electromotive force (EMF) in a conductor.
  • Voltage Transformation – The ability of a transformer to increase (step-up) or decrease (step-down) voltage levels in an AC circuit.
  • Turns Ratio – The ratio of the number of turns in the primary coil to the number of turns in the secondary coil, which determines the voltage change.
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