A solenoid is to have an inductance of 0.285 mH, a cross-sectional area of 6.00x10-4 m2, and a length of 36.0cm.How many turns per unit length should it have? (Ans. 1.02x103 turns/m)If the self-induced emf is -12.5 mV at a given time, at what rate is the current changing at that instant. (Ans. 43.9 A/s)

INDUCTANCE =μ0N2AL SO, N = 0.000285×0.36×101112.57×6 = 1.02X103

Answered: A solenoid is to have an inductance of…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

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A solenoid is to have an inductance of 0.285 mH, a cross-sectional area of 6.00x10^-4m², and a length of 36.0cm.

How many turns per unit length should it have? (Ans. 1.02x10³ turns/m)
If the self-induced emf is -12.5 mV at a given time, at what rate is the current changing at that instant. (Ans. 43.9 A/s)

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