Answering machine takes an ac voltage of amplitude

Reference no: EM13650051

A transformer for an answering machine takes an ac voltage of amplitude 150 V as its inputand supplies a 7.9 V amplitude to the answering machine. The primary has 400turns.

a) How many turns does the secondary have?
b) When idle, the answering machine uses a maximum power of6.0 W. What is the amplitude of thecurrent drawn from the 150 V line?

Reference no: EM13650051

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