Question

Transformers are used in

• A. d.c circuits only
• B. a.c. circuits only
• C. Both a.c and d.c circuits
• D. Integrated circuits

Answer 1

Answer: (B)

a.c. circuits only

Transformers are used only in A.C. Circuits because D.C. current could not produce changing flux which in turn not able to produce induced emf in the secondary coil of the transformer but A.C. Current produces changing flux.