The primary windings of a transformer which has an 88%efficiency are connected to 110-V ac. The secondarywindings are connected across a 2.4Ω, 75-W lightbulb.(a) Calculate the current through the primary windings ofthe transformer. (b) Calculate the ratio of the numberof primary windings of the transformer to the number ofsecondary windings of the transformer.

The primary windings of a transformer which has an 88%efficiency are connected to 110-V ac. The secondarywindings are connected across a 2.4Ω, 75-W lightbulb.(a) Calculate the current through the primary windings ofthe transformer. (b) Calculate the ratio of the numberof primary windings of the transformer to the number ofsecondary windings of the transformer.

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter25: Electromagnetic Induction

Section: Chapter Questions

Problem 55A

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