The transformer voltage induced in the secondary coil of a transformer is mainly due to
A. a varying electric field
B. a varying magnetic field
C. the vibrations of the primary coil
D. the iron core of the transformer
Answer:B
The transformer voltage induced in the secondary coil of a transformer is mainly due to
A. a varying electric field B. a varying magnetic field C. the vibrations of the primary coil D. the iron core of the transformer