Two coils are placed close together in a physics lab to demonstrate Faraday's law of induction. A current of 4.90 A in one is switched off in 1.40 ms,inducing a 7.90 V emf in the other. What is their mutual inductance? The 3.90 A current through a 8.70 mH inductor is switched off in 7.30 ms. What is the emf induced opposing this?

Initial current ,I1=4.90A final current, I2=0A time required, dt=1.4*10-3s so di/dt…

Answered: wo coils are placed close together in a…

wo coils are placed close together in a physics lab to demonstrate Faraday's law of induction. A current of 4.90 A in one is switched off in 1.40 ms,

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter14: Inductance

Section: Chapter Questions

Problem 33P: A toroidal coil has a mean radius of 16 cm and a cross-sectional area of 0.25 cm2; it is wound...

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Question

Two coils are placed close together in a physics lab to demonstrate Faraday's law of induction. A current of 4.90 A in one is switched off in 1.40 ms,
inducing a 7.90 V emf in the other. What is their mutual inductance?

The 3.90 A current through a 8.70 mH inductor is switched off in 7.30 ms. What is the emf induced opposing this?

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