The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of I = 4.00 A. The radius of cross-section A, is r, = 0.250 cm. A2 (a) What is the magnitude of the current density across A,? A/m2 The radius r, at A, is larger than the radius r, at A,. (b) Is the current at A, larger, smaller, or the same? O The current is larger. O The current is smaller. O The current is the same. (c) the density at A, larger, smaller, or the same? O The current density is larger. O The current density is smaller. O The current density is the same.

The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of I = 4.00 A. The radius of cross-section A, is r, = 0.250 cm. A2 (a) What is the magnitude of the current density across A,? A/m2 The radius r, at A, is larger than the radius r, at A,. (b) Is the current at A, larger, smaller, or the same? O The current is larger. O The current is smaller. O The current is the same. (c) the density at A, larger, smaller, or the same? O The current density is larger. O The current density is smaller. O The current density is the same.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 24P: A conductor carries a current that is decreasing exponentially with time. The current is modeled as...

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