Answered: (a) t = 0 (b) When ring exits ix xk x x…

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter13: Electromagnetic Induction

Section: Chapter Questions

Problem 54P: The current in a long solenoid of radius 3 cm and 20 turns cm is varied with time at a rate of 2...

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A rectangular copper ring, of mass 100 g and resistance 0.2 Ω , is in a region of uniform magnetic field that is perpendicular to the area enclosed by the ring and horizontal to Earth’s surface. The ring is let go from rest
when it is at the edge of the nonzero magnetic field region (see below). (a) Find its speed when the ring just exits the region of uniform magnetic field. (b) If it was let go at t = 0 , what is the time when it exits the region of magnetic field for the following values: a = 25 cm, b = 50 cm, B = 3 T, and g = 9.8 m/s2? Assume the magnetic field of the induced current is negligible compared to 3 T.

(a) t = 0
(b) When ring exits
ix xk x x *
x xk x xx
Xi
x x xX Xi
xxXx X
x x k x
iX X
xi
ix
XXX

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