The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of I = 4.50 A. The radius of cross-section A, is r, = 0.450 cm. A1 (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) Is the current 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. Assume A, = 2A1 (d) Specify the radius at A2. mm (e) Specify the current at A,. A (f) Specify the current density at A,. A/m2

The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of I = 4.50 A. The radius of cross-section A, is r, = 0.450 cm. A1 (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) Is the current 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. Assume A, = 2A1 (d) Specify the radius at A2. mm (e) Specify the current at A,. A (f) Specify the current density at A,. A/m2

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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