A microphone has a resistance of 7.8 Ω. When the microphone is connected to a voltage source, the average power it dissipates is 89 W. (a) What is the rms current? in A (b) What is the peak voltage?
A microphone has a resistance of 7.8 Ω. When the microphone is connected to a voltage source, the average power it dissipates is 89 W. (a) What is the rms current? in A (b) What is the peak voltage?
Glencoe Physics: Principles and Problems, Student Edition
1st Edition
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Paul W. Zitzewitz
Chapter25: Electromagnetic Induction
Section25.1: Electric Current From Changing Magnetic Fields
Problem 6PP
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A microphone has a resistance of 7.8 Ω. When the microphone is connected to a voltage source, the average power it dissipates is 89 W.
(a) What is the rms current? in A
(b) What is the peak voltage?
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