A transformer is used to lower the electrical supply voltage of 240V to supply power to a light bulb with rated power of 12V, 2A. If the current in the primary coil is 0.15 A, what is the efficiency of the transformer?

A transformer is used to lower the electrical supply voltage of 240V to supply power to a light bulb with rated power of 12V, 2A. If the current in the primary coil is 0.15 A, what is the efficiency of the transformer?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

What is the efficiency of the transformer?

A transformer is used to lower
the electrical supply voltage of
240V to supply power to a
light bulb with rated power of
12V, 2A. If the current in the
primary coil is 0.15 A, what is
the efficiency of the
transformer?

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