8. A phonograph pick up develops an open-circuit emf of 50 mV and has an internal resistance of 1200 ohm. A. What voltage will it develop across a 4 ohms load resistance? B. What value of load resistance must be used to obtain a 75% eff? C. What is the maximum power output of the pickup?

8. A phonograph pick up develops an open-circuit emf of 50 mV and has an internal resistance of 1200 ohm. A. What voltage will it develop across a 4 ohms load resistance? B. What value of load resistance must be used to obtain a 75% eff? C. What is the maximum power output of the pickup?

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Question

8. A phonograph pick up develops an
open-circuit emf of 50 mV and has an
internal resistance of 1200 ohm.
A. What voltage will it develop across a 4
ohms load resistance?
B. What value of load resistance must be used
to obtain a 75% eff?
C. What is the maximum power output
of the pickup?

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