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Two identical coils with self-inductance of 250 micro-henry each are connected in series. When connected in series- aiding, the equivalent inductance is 550 micro-henry and 450 micro-henry when connected in series-opposing. How much is the coupling coefficient of two coils?

Two identical coils with self-inductance of 250 micro-henry each are connected in series. When connected in series- aiding, the equivalent inductance is 550 micro-henry and 450 micro-henry when connected in series-opposing. How much is the coupling coefficient of two coils?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Two identical coils with self-inductance of 250 micro-henry each are connected in series. When connected in series- aiding, the equivalent inductance is 550 micro-henry and 450 micro-henry when connected in series-opposing. How much is the coupling coefficient of two coils?
Transcribed Image Text:Two identical coils with self-inductance of 250 micro-henry each are connected in series. When connected in series- aiding, the equivalent inductance is 550 micro-henry and 450 micro-henry when connected in series-opposing. How much is the coupling coefficient of two coils?
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