Question

question 23 of 25
which device consists of two separate coils of wire wrapped around an iron ring?
a. a transformer
b. a motor
c. a generator
d. a commutator

Explanation:

A transformer has two separate coils (primary and secondary) wrapped around an iron core (which can be in ring - like shape). This structure is used for changing voltage levels through electromagnetic induction. A motor converts electrical energy to mechanical energy using a different principle. A generator converts mechanical energy to electrical energy. A commutator is part of a DC motor or generator to reverse the current direction.

Answer:

A. A transformer