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What is the relation between input (IA) and output (IB) current and the input (VA) and output (VB) voltage in a transformer?

What is the relation between input (IA) and output (IB) current and the input (VA) and output (VB) voltage in a transformer? Correct Answer V<sub>A</sub>.I<sub>A </sub> = V<sub>B</sub>.I<sub>B</sub>

Transformer:

An electrical device that is used to transfer electrical energy from one electrical circuit to another is called a transformer.

In a transformer, there are two coils: The primary coil (P) and the secondary coil (S).

Important Points

There are two types of transformer:

Step-up transformer:

  • The transformer which increases the potential is called a step-up transformer.
  • The number of turns in the secondary coil is more than that in the primary coil.

 

​Step-down transformer:

  • The transformer which decreases the potential is called a step-down transformer.
  • The number of turns in the secondary coil is less than that in the primary coil

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