Why does an electric fan continue to rotate for some time after the current is switched off?

University Physics Volume 2
18th Edition
ISBN:9781938168161
Author:OpenStax
Publisher:OpenStax
Chapter11: Magnetic Forces And Fields
Section: Chapter Questions
Problem 68AP: What magnetic field is required in order to confine a proton moving with a speed of 4.0 × 106 m/s to...
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Why does an electric fan continue to rotate for some time after the current is switched off?

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