At t=0 the open switch in figure is closed. By using kirchhoff's rule for the instantaneous currents and voltage in this two-loop circuits, show that the current in the inductor at time t>0 is I(t)=(emf/R1)[1-e^-(R'/L)t] where R=R1R2/(R1+R2).

At t=0 the open switch in figure is closed. By using kirchhoff's rule for the instantaneous currents and voltage in this two-loop circuits, show that the current in the inductor at time t>0 is I(t)=(emf/R1)[1-e^-(R'/L)t] where R=R1R2/(R1+R2).

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter23: Faraday’s Law And Inductance

Section: Chapter Questions

Problem 12OQ

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Electromagnets

The word "electromagnet" is composed of two words, ‘electro’ and ‘magnet’. It is a type of magnet in which an electric current helps in the generation of a magnetic field. Electromagnets usually consist of two major parts, wire and a coil around which the wire is wound. This is called a solenoid. When an electric current is allowed to pass through the coiled wire, the electric current produces a magnetic field. This magnetic field is present only when current is passing through the wire.

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