The process of induction, which is required for the magnetic operation of a transformer, depends on the length of conductor and a concentrated magnetic or electromagnetic field with relative motion between the two.
The ever-changing and periodically-reversing __________________________ of the primary and secondary circuits of the transformer provide the relative motion.
A) alternating voltage
B) alternating current
C) none of the answers
D) alternating power
Show Answer
Answer:B
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