SThe magnet in the previous question is now plunged into a coil that has twice the number of turns as before, making it twice as long. If the speed of the magnet isagain v, the induced current in the coil is-------.O unchangedO four times as greatO half as greatO twice as great

Thus emf induced is proportional to rate of change of magnetic flux.

Answered: nagnet in the previous question is now…

nagnet in the previous question is now plunged into a coil that has tu v, the induced current in the coil is changed ur times as great lf as great wice as great

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 12CQ: The north pole of a mag’iet is moved toward a copper loop, as shown below. If you are looking at the...

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Concept explainers

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.

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