A transformer is used to supply a 15.25 V model train with power from a 120 V wall plug. The train operates at 92 W of power. (a) What is the current in the secondary coil of the transformer in ampere?

A transformer is used to supply a 15.25 V model train with power from a 120 V wall plug. The train operates at 92 W of power. (a) What is the current in the secondary coil of the transformer in ampere?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter15: Alternating-current Circuits

Section: Chapter Questions

Problem 48P: A transformer is used to supply a 12-V model train with power from a 110-V wall plug. The train...

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Question

A transformer is used to supply a 15.25 V model
train with power from a 120 V wall plug. The train
operates at 92 W of power.
(a) What is the current in the secondary coil of
the transformer in ampere?
(b) What is the current in the primary coil in
ampere?
(c) What is the ratio of the number of primary to
secondary turns?
个

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