A doorbell uses a step-down transformer to convert standard US household an rms of 20V. The primary coil has 125 turns and has a rms of 30mA. How many turns are in the secondary coil and what is its rms current?

A doorbell uses a step-down transformer to convert standard US household an rms of 20V. The primary coil has 125 turns and has a rms of 30mA. How many turns are in the secondary coil and what is its rms current?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter15: Alternating-current Circuits

Section: Chapter Questions

Problem 46P: An ac source of emf delivers 5.0 mW of power at an rms current of 2.0 mA when it is connected to the...

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