Question

A transformer works on

• A. AC only
• B. DC only
• C. High voltage only
• D. Both A and B

Answer 1

The correct option is A

AC only

1. Transformer is a device that increases or decreases the level of voltage or current.
2. There are two types of transformer - step up and step down.
3. Transformer works on the principle of Faraday's law of electromagnetic induction.
4. It means that the transformer works on AC signals only.

Hence, option A is correct.