A) self- induction
B) mutual induction
C) eddy current
D) none of these
Correct Answer: B
Solution :
Key Idea: Transformer consists of two coils one primary and the other secondary. Transformer is a device based on the principle of mutual induction, which is used for converting large alternating current at low voltage into small current at high voltage and vice-versa. NOTE: 1. The transformer which converts low voltages into higher ones are called step-up transformers, while those which convert high voltages into lower ones are called step-down transformers. Transformers are used only in AC not DC.You need to login to perform this action.
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