Figure P29.69

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter29: Direct Current (dc) Circuits
Section: Chapter Questions
Problem 77PQ: Figure P29.77 shows a circuit with two batteries and three resistors. a. How much current flows...
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A nonconducting sphere has mass 80.0 g and radius 20.0 cm. A flat, compact coil of
wire with five turns is wrapped tightly around it, with each turn concentric with the
sphere. The sphere is placed on an inclined plane that slopes downward to the left
(Fig. P29.69), making an angle 0 with the horizontal so that the coil is parallel to the
inclined plane. A uniform magnetic field of 0.350 T vertically upward exists in the
region of the sphere. (a) What current in the coil will enable the sphere to rest in
equilibrium on the inclined plane? (b) Show that the result does not depend on the
value of θ.

Figure P29.69
Transcribed Image Text:Figure P29.69
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