A straight rod moves along parallel con- ducting rails, as shown. The rails are con- nected at the left side through a resistor so that the rod and rails form a closed rectangu- lar loop. A uniform field perpendicular to the movement of the rod exists throughout the region. Assume the rod remains in contact with the rails as it moves. The rod experiences no friction or air drag. The rails and rod have negligible resistance. 3.7 T 3.7 T At what speed should the rod be moving to produce the downward current in the resistor? Answer in units of m/s. 0.39 A – 8 7.6 g 1.6 m

A straight rod moves along parallel con- ducting rails, as shown. The rails are con- nected at the left side through a resistor so that the rod and rails form a closed rectangu- lar loop. A uniform field perpendicular to the movement of the rod exists throughout the region. Assume the rod remains in contact with the rails as it moves. The rod experiences no friction or air drag. The rails and rod have negligible resistance. 3.7 T 3.7 T At what speed should the rod be moving to produce the downward current in the resistor? Answer in units of m/s. 0.39 A – 8 7.6 g 1.6 m

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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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.

Question

A straight rod moves along parallel con-
ducting rails, as shown. The rails are con-
nected at the left side through a resistor so
that the rod and rails form a closed rectangu-
lar loop. A uniform field perpendicular to the
movement of the rod exists throughout the
region.
Assume the rod remains in contact with
the rails as it moves. The rod experiences no
friction or air drag. The rails and rod have
negligible resistance.
3.7 T
3.7 T
At what speed should the rod be moving to
produce the downward current in the resistor?
Answer in units of m/s.
0.39 A –
® 7.6 g
1.6 m

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