(b) Under what condition is the wire able to move upward at constant velocity? (c) Find the magnitude and direction of the minimum magnetic field required to move the wire at constant speed. magnitude direction ---Select--- T (d) What happens if the magnetic field exceeds this minimum value?

(b) Under what condition is the wire able to move upward at constant velocity? (c) Find the magnitude and direction of the minimum magnetic field required to move the wire at constant speed. magnitude direction ---Select--- T (d) What happens if the magnetic field exceeds this minimum value?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter25: Electromagnetic Induction

Section: Chapter Questions

Problem 76A

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Consider the system pictured in the figure below. A 14.7-cm horizontal wire of mass 14.9 g is placed between two thin, vertical conductors, and a uniform magnetic field acts perpendicular to the page. The wire is free to move vertically without friction on the two vertical conductors. When a 5.45-A current is directed as shown in the figure, the horizontal wire moves upward at constant velocity in the presence of gravity.

(b) Under what condition is the wire able to move upward at constant velocity?

(c) Find the magnitude and direction of the minimum magnetic field required to move the wire at constant speed.
magnitude
direction
---Select---
T
(d) What happens if the magnetic field exceeds this minimum value?

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