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A step-down transformer is used for recharging the batteries of portable electronic devices. The turns ratio N2/N₁ for a particular transformer used in a DVD player is 1:10. When used with 120-V (rms) household service, the transformer draws an rms current of 32.5 mA from the house outlet. (a) Find the rms output voltage (in V) of the transformer. V (b) Find the power (in W) delivered to the DVD player. W (c) What If? What would be the current (in mA) drawn from the house outlet if the transformer had an efficiency of 85.0%, but the power delivered to the Blu-ray player remains the same? mA

A step-down transformer is used for recharging the batteries of portable electronic devices. The turns ratio N2/N₁ for a particular transformer used in a DVD player is 1:10. When used with 120-V (rms) household service, the transformer draws an rms current of 32.5 mA from the house outlet. (a) Find the rms output voltage (in V) of the transformer. V (b) Find the power (in W) delivered to the DVD player. W (c) What If? What would be the current (in mA) drawn from the house outlet if the transformer had an efficiency of 85.0%, but the power delivered to the Blu-ray player remains the same? mA

College Physics
College Physics
10th Edition
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter21: Alternating-Current Circuits And Electromagnetic Waves
Section: Chapter Questions
Problem 44P: A step-down transformer is used for recharging the batteries of portable devices. The turns ratio...
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A step-down transformer is used for recharging the batteries of portable electronic devices. The turns ratio N2/N₁ for a particular transformer used in a DVD player is 1:10. When used with 120-V (rms) household service, the transformer draws an rms current of 32.5 mA from the house outlet. (a) Find the rms output voltage (in V) of the transformer. V (b) Find the power (in W) delivered to the DVD player. W (c) What If? What would be the current (in mA) drawn from the house outlet if the transformer had an efficiency of 85.0%, but the power delivered to the Blu-ray player remains the same? mA
Transcribed Image Text:A step-down transformer is used for recharging the batteries of portable electronic devices. The turns ratio N2/N₁ for a particular transformer used in a DVD player is 1:10. When used with 120-V (rms) household service, the transformer draws an rms current of 32.5 mA from the house outlet. (a) Find the rms output voltage (in V) of the transformer. V (b) Find the power (in W) delivered to the DVD player. W (c) What If? What would be the current (in mA) drawn from the house outlet if the transformer had an efficiency of 85.0%, but the power delivered to the Blu-ray player remains the same? mA
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