Question

A transformer is an electrical device, which is used for changing

• A. Alternating voltages
• B. Direct voltages
• C. Either (a) or (b)
• D. Neither (a) nor (b)

Answer 1

The correct option is A

Alternating voltages

Explanation of correct option

1. Transformers are used to change voltage levels for alternating voltages.
2. We often need to increase or decrease the peak voltage levels of alternating current circuits. For this reason, transformers are used.

Thus, a transformer is an electrical device, alternating voltages are used for changing.

Hence, the correct option is (A).