An AC transformer converts 120 V into 3.0 V. A small electronic device draws 4.5×10-³ A from this transformer. If the secondary has 50 turns, what is the number of turns and current in the primary coil?

An AC transformer converts 120 V into 3.0 V. A small electronic device draws 4.5×10-³ A from this transformer. If the secondary has 50 turns, what is the number of turns and current in the primary coil?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter15: Alternating-current Circuits

Section: Chapter Questions

Problem 15.9CYU: Check Your Understanding A transformer steps the line voltage down from 110 to 9.0 V so that a...

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Question

An AC transformer converts 120 V into 3.0 V. A small electronic device draws 4.5×10-³ A
from this transformer. If the secondary has 50 turns, what is the number
of turns and current in the primary coil?

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